Answer:
Pascal's law states that when there is an increase in pressure at any point in a confined fluid, there is an equal increase at every other point in the container. ... Applied to a more complex system below, such as a hydraulic car lift, Pascal's law allows forces to be multiplied.
Explanation:
the density of mercury is 13.6 g\cm3 find the volume of 270 of mercury?
Answer:
the density of the mercury is 19.85 cm^3
Explanation:
Given that
The density of the mercury is 13.6g\cm^3
And, the mass of the mercury is 270
We need to determine the volume of the mercury
As we know that
density = mass ÷ volume
13.6 g/cm3 = 270 g/ volume
volume = (270 g) ÷ (13.6 g/cm3)
= 19.85 cm^3
Hence, the density of the mercury is 19.85 cm^3
In the diagram, q1 = +6.39*10^_9 C and
q2 = +3.22*10^-9 C. What is the
electric potential at point P?
Include a + or - sign.
Answer:
The electric potential will be "259.695 volt".
Explanation:
In the given question, the figure is not provided. Below is the attached figure given.
Given:
[tex]q_1=6.39\times 10^{-9} \ C[/tex]
[tex]q_2=3.22\times 10^{-9} \ C[/tex]
[tex]AP=(0.150+0.250)[/tex]
[tex]=0.40 \ m[/tex]
[tex]BP=0.25 \ m[/tex]
Now,
At point P, the electric potential will be:
⇒ [tex]V=\frac{q_1}{4 \pi \epsilon_o AP } +\frac{q_2}{4 \pi \epsilon_o BP}[/tex]
By putting values, we get
⇒ [tex]=9\times 10^9 [\frac{6.39\times 10^{-9}}{0.40} +\frac{3.22\times 10^{-9}}{0.25} ][/tex]
⇒ [tex]=259.695 \ Volt[/tex]
Answer:
259.695
Explanation:
Acellus
HELP HELP HELP HELP HELP
Answer:
Explanation: case b i think
Due to the surface makeup and the product that spilled, what is the direction most hazardous materials will spread based on their viscosity
Due to the surface makeup and the product that spilled, Downhill/Downwind is the direction most hazardous materials will spread based on their viscosity.
The viscosity of a fluid (liquid or gas) is its resistance to a change in form or movement of neighbouring sections relative to one another. Viscosity signifies resistance to flow. The SI unit is poiseiulle (PI).
It relates to the colloquial sense of "thickness" in liquids: syrup, for example, has a higher viscosity than water. The strength of the compensatory force is related to the viscosity of the fluid in a tube with a constant rate of flow.
In general, viscosity is affected by the condition of a fluid, such as temperature, pressure, and rate of deformation. However, in certain circumstances, the reliance on some of these features is minor. The viscosity of a Newtonian fluid, for example, does not vary appreciably with the rate of deformation. Only at very low temperatures is zero viscosity (no resistance to shear stress) observed in superfluids; otherwise, the second law of thermodynamics requires all fluids to have positive viscosity.
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Brody is barbecuing hamburgers on the grill. He notices that the coals are ready for cooking because he feels the warmth of the coals and sees that they are glowing red. What types of electromagnetic waves is he detecting?
Answer:
i think the answer is infrared
An electron is moving at 7.4x105 m/s perpendicular to a magnetic field. It experiences a force of 2.0x10–13 N. What is the magnetic field strength?
Answer:
1.69 T
Explanation:
Applying,
F = BvqsinФ.................. Equation 1
Where F = Force, B = magnetic field, v = velocity, q = charge on an electron, Ф = angle between the electron and the field.
make B the subject of the equation,
B = F/(vqsinФ)............. Equation 2
From the question,
Given: F = 2.0×10⁻¹³ N, v = 7.4×10⁵ m/s, Ф = 90°
Constant: q = 1.60×10⁻¹⁹ C
Substitute into equation 2
B = 2.0×10⁻¹³/(7.4×10⁵×1.60×10⁻¹⁹×sin90°)
B = 0.169×10
B = 1.69 T
How does kinetic energy play a role in phase change?
During phase shift, the substance's molecules' average kinetic energy remains constant.
How does kinetic energy affect phase change?Simply put, molecules move more quickly as kinetic energy rises. Nevertheless, molecules change phases when potential energy rises. The molecule changes phases as a result of an increase in potential energy.
In a phase change, matter moves from one state to another either by gaining energy through heat and entering a more energetic state, or by losing energy through heat and entering a state with lower energy.
The energy supplied during phase change is only used to separate the molecules; none of it is used to boost the kinetic energy of the molecules. Therefore, since the molecules' kinetic energy is constant, its temperature won't increase.
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Halp i'm so confused I want to cry....
Three children are throwing a disc in the park. The first child throws the disc 32 m [W 14° S] to the second child, who then throws the disc 15 m [E 62° S]. What is the net displacement of the disc?
*the answer is 32m (W 41 S) Please explain how to do this....
NO LINKS I WILL REPORT U
Answer:
Evidently W 14 S means West and to the South by 14 deg
If you draw the X-Y coordinates and enter this value
Tx1 = - 32 * cos 14 = -31 (along the negative x-axis)
Ty1 = -32 * sin 14 = -7.4 (along the negative y-axis)
Likewise
Tx2 = 15 * cos 62 = 7.04
Ty2 = -15 * sin 62 = -13.2
Tx = -31 + 7.04 = -24
Ty = -7.4 - 13.2 = -20.6
Final distance = (24^2 + 20.6^2)^1/2 = 31.6 m
Direction will be South of West
tan -20.6 / -24 = 41 deg
1. A 10 kg rubber block sliding on a concrete floor (μ=0. 65) 2. A 248 kg object moving at 19 m/s comes to stop over a distance of 38 m. What is the coefficient of kinetic friction between the surfaces? HURRY 50pts and dont take the points just answer the question
The coefficient of kinetic friction between the surfaces is 0.48.
What is kinetic friction?Friction is simply defined as the force that prevents a sliding object from moving. Kinetic friction is a natural phenomenon that disrupts the motion of two or more objects. The force acts in the opposite direction of the motion of the object.
When we stop a car, we use brakes, which is where friction comes into play. When walking, friction is to thank once more. But when we have to stop in the middle of a puddle, things become more difficult because friction is less and cannot help as much.
Solve for a using K3: [tex]$v^2=v_0^2+2 a d$\\[/tex]
[tex]& 19^2=0_0^2+2 a 38 \\& a_x=-4.75 \mathrm{~m} / \mathrm{s}^2[/tex]
[tex]\begin{aligned}& \text F_{\text {net }}=-f_k=m a_x, \text { and } \\& -f_k=\mu_k F_n=\mu_k m g, \text { so we can say } \\& -m a_x=\mu_k \cdot m g \\& \mu_k=\frac{m a_x}{m g}=\frac{-a_x}{g} \\& \mu_k=\frac{-(-4.75)^m / s^2}{9.8}=0.48\end{aligned}$$[/tex]
Thus, The coefficient of kinetic friction between the surfaces is 0.48.
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a car weighs 3600 kg is traveling at 21.0 m/s. the driver doesn?t notice a red light and rear-ends another car at rest. both cars stick together and move with a speed of 9.0 m/s. what is the mass of the car that was at rest?
Answer:
Below
Explanation:
Use law of conservation of momentum
momentum before crash = momentum of the system after crash
3600 kg * 21 m/s = (3600+ x ) * 9
solve for x = 4800 kg
The moon Phobos orbits Mars
(mass = 6.42 x 1023 kg) at a distance
of 9.38 x 106 m. What is its period of
orbit?
period of orbit is 2136.63 m/s if The moon Phobos orbits Mars (mass = 6.42x 1023 kg) at a distance of 9.38 x 106 m.
What is the full meaning of distance?noun. the extent or amount of space between two things, points, lines, etc. the state or fact of being apart in space, as of one thing from another; remoteness. a linear extent of space: Seven miles is a distance too great to walk in an hour.
How is distance measured?The SI unit for distance is the meter (m). Short distances may be measured in centimeters (cm), and long distances may be measured in kilometers (km). For example, you might measure the distance from the bottom to the top of a sheet of paper in centimeters and the distance from your house to your school in kilometers.
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Which unseen force causes a golf ball to roll faster on concrete than on grass? *
Answer:Most physics and biomechanics studies of a golf swing are concerned with the motion of a ... The top surface of the concrete was much smoother than the ball, ... The ball will then roll like a coin on its edge or like a ball used in lawn bowls. ... centre of the club head then the force of the ball pushing against the face
Explanation:
the television station sends
Answer:
If I remember right I believe it's radio waves
An atom with 29 protons and 36 neutrons is an isotope of
(A) Si
(B) Cu
(C) Kr
(D) CI
Answer:
(B) Cu
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such determines or defines the structure of a chemical element.
Generally, atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
Isotopes can be defined as the atom of an element that has the same number of protons but different number of neutrons. This ultimately implies that, the isotopes of an element have the same atomic number (number of protons) but different atomic mass (number of nucleons).
The isotope of an element is denoted by [tex] X_{Z}^{A} [/tex]
Where; X is the symbol of the element.
A is the atomic mass or number of nucleons.
Z is the atomic number or number of protons.
Hence, an atom with 29 protons and 36 neutrons is an isotope of copper because it has an atomic mass of 65, which corresponds with that of the chemical element known as copper with the symbol, Cu.
A heavy truck and a small truck roll down a hill. Neglecting friction, at the bottom of the hill the heavy truck has greater
acceleration.
speed.
momentum.
all of the above
none of the above
Correct option is A, A heavy truck and a small truck roll down a hill. Neglecting friction, at the bottom of the hill the heavy truck has greater acceleration.
Momentum and mass are directly proportional in direction. This is so because mass times velocity make up the equation for momentum. Another way to express this is as p = m*v, where p stands for momentum, m for mass, and v for velocity. As a result, momentum doubles if mass is increased by a factor of two but velocity remains constant.
p = m v . The equation demonstrates that momentum is directly related to an object's mass (m) and velocity (v). As a result, an object's momentum increases with increasing mass or velocity. The momentum of a large, swift object is larger than that of a small, slower object.
The definition of momentum is "mass in motion." Since every item has mass, if it is moving, it must have momentum because its mass is in motion. The amount of motion and the speed of the motion are the two factors that determine how much momentum an item possesses.
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i need help plssssss
The three key words that have been replaced in the cross - section of a solar panel are:
R - Insulator S - Copper T - BlackThis means that Option A is correct.
What are some parts in a solar panel ?A solar panel, also known as a photovoltaic (PV) panel, is a device that converts sunlight into electricity. It is made up of several different parts that work together to generate electricity. Solar cells are made of silicon and are responsible for converting sunlight into electricity. They are usually arranged in a grid pattern on the panel.
The backsheet is the layer of material that sits on the back of the solar cells. It is responsible for protecting the back of the solar cells from moisture and other environmental factors. It is an insulator and is shown as R.
There are also the copper wires which heat the water and they are painted black as black absorbs heat better. These are labeled S and T respectively.
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Normal
Question
Question 22
A projectile is launched into space where there is very little friction. According to Newton's law of inertia, the projectile willmost likely continue to travel in a straight line and?
The projectile will probably keep moving in a straight line and at a constant speed as long as no unbalanced forces are acting on it, according to Newton's law of inertia.
What is law of inertia?The law of inertia, also known as Newton's first law, states that an object at rest will remain at rest, and an object in motion will continue in motion with a constant velocity, unless acted upon by a net external force. In simple words, an object will remain in the same state of motion unless acted upon by an external force. This law explains why it is difficult to start an object moving and easy to keep it moving once it is in motion. This law applies to all objects and is a fundamental principle of physics. It also helps to understand the concept of force, motion and energy in physics.To learn more about law of inertia refer:
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Bird bones have air pockets in them to reduce their weight. This also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 47.0 g47.0 g and its apparent mass when submerged is 3.60 g3.60 g (the bone is watertight). What mass of water is displaced
The mass of water displaced when the mass of bird bone in water and air is given, is calculated to be 43.4 g.
Given that,
Weight of bird bone in air = True weight = 47 g
Apparent weight of the bird bone when submerged = 3.6 g
The equation for apparent weight is known to be,
Apparent weight = True weight - Buoyant force
Making Buoyant force as subject, we have,
Buoyant force = 47 g - 3.6 g = 43.4 g
F b = mw × g = (m wat - m air)× g
mw = m wat - m air = 47 g - 3.6 g = 43.4 g
Thus, the mass of the water displaced is 43.4 g.
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the welding process that uses flux-cored wire without the use of an external shielding gas is called
Self Shielding FCAW is the use of an outside shielding gas.
What is FCAW with self-shielding?Many advantages come with self-shielded circulation arc welding (FCAW-S), such as good weldability, metal deposition rates, and exceptional chemical and mechanical qualities.
Self-shielding wire: what is it?With self-shielding wires, there is no need for a gas cylinder because they don't need an inert gas when the arc is operating.As a result, it's a fantastic option for offshore applications or situations where mobility is crucial.
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A medical defibrillator stores 950 J of energy in a 100uF capacitor.
What is the voltage across the capacitor?
If the capacitor discharges 350J of its stored energy in 3.1ms , what power is delivered during this time?
Power is given at p=1.13 *10^(-5) throughout this period.
An electrical component that can store and release electric energy is a power capacitor. The device comprises of one or more pairs of plates that are connected to two terminals and allow the stored energy to be released into a circuit as needed. The plates are separated from one another by an insulating material (the dielectric). By removing the reactive power from the supply line, a capacitor aids in the improvement of power factor.
This is accomplished through the capacitor's storage of magnetic reversal energy. Power is defined as energy multiplied by the frequency of an operation. (a) Computation needs switching from one voltage (V 1) to another voltage (V 2) before most likely returning to a starting voltage (like V 1).
Power = u/t
p = 350/(3.1*(1/1000))
p= 1.13 *10^(-5)
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A 63.0-kg sprinter starts a race with an acceleration of 3.20 m/s2. If the sprinter from the previous problem accelerates at that rate for 20.0 m, and then maintains that velocity for the remainder of the 100.0-m dash, what will be his time for the race
At his current velocity the sprinter will complete the 100.0-m dash in 28.53 s.
What is velocity?
Velocity is a vector quantity that describes the rate of change of an object's position. It is a measure of how fast an object is moving and in what direction. Velocity is measured in units of meters per second (m/s) or miles per hour (mph) and is often represented by the symbol "v".
We can use the equations of motion to calculate the time for the sprinter to complete the race.
First, we can use the equation:
v = u + at
to find the final velocity of the sprinter after accelerating for 20.0 m. Here, u is the initial velocity (which is 0 m/s since the sprinter is at rest at the start of the race), a is the acceleration of 3.20 m/s^2, and t is the time it takes for the sprinter to accelerate for 20.0 m.
v = 0 + (3.20 m/s^2)(t)
We know that the sprinter accelerates for 20.0 m, so we can use the equation:
s = ut + 1/2at^2
to find the time t:
20.0 m = (0 m/s)(t) + 1/2(3.20 m/s^2)(t^2)
t^2 = (20.0 m) * 2 / (3.20 m/s^2) = 12.5
t = sqrt(12.5) = 3.53 s
So the time it takes for the sprinter to accelerate for 20.0 m is 3.53 s.
Next, we can use the equation:
v = d/t
to find the time it takes for the sprinter to cover the remaining 80.0 m of the race at his final velocity. Here, d is the remaining distance of 80.0 m and v is the final velocity found before.
t = d/v = 80.0 m / (3.20 m/s) = 25.0 s
So the time it takes for the sprinter to cover the remaining 80.0 m of the race at his final velocity is 25.0 s
So the total time for the race is the sum of the time it takes to accelerate and the time it takes to cover the remaining distance at a constant velocity:
t = 3.53 s + 25.0 s = 28.53 s
Hence, at his current velocity the sprinter will complete the 100.0-m dash in 28.53 s.
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Can anyone help meee plzzz
Answer:
the first one is higher
Explanation:
i d k what the second one is
Deon is running at a velocity of 5.4 meters per second. Deon has a total mass of 95 kilograms—including his helmet, uniform, and pads. If Deon runs directly into Chuck, who has a total mass of 120 kilograms and is standing still, what is the momentum of the Deon-Chuck system after the collision? Assume momentum is conserved.
The law of conservation of momentum states that the momentum of a system is equal and conserved before and after collision. Therefore, the final momentum of the system is 513 kgm/s.
What is the law of conservation of momentum?The law of conservation of momentum states that, for two or more bodies which are present in an isolated system that are acting upon each other, their total momentum remains constant in the system unless an external force is applied on them. The expression for conservation of momentum is:
m₁ u₁ + m₂u₂ = m₁v₁ + m₂v₂
where, m₁ = mass of one object,
m₂ = mass of another object,
u₁ and u₂ are the initial velocities of objects,
v₁ and v₂ are the final velocities of objects.
Here, m₁ = 95kg, m₂ = 120kg
u₁ = 5.4m/s, u₂ = 0m/s (at rest)
m₁ u₁ + m₂u₂ = m₁v₁ + m₂v₂
95 × 5.4 + 120 × 0 = 95 × v₁ + 120 × v₂
513 + 0 = 95 × v₁ + 120 × v₂
Momentum before collision = Momentum after collision
Therefore, the momentum after collision is 513 kgm/s.
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What’s the answer???
Answer: ( 2nd ) ( 3 )
Explanation:
How far was the beam of constructive interference deflected in the diagram below? (Assume the original beam of constructive interference was at 90° on the protractor.)
A. 15°
B. 35°
C. 55°
D. 75°
Max Planck and Albert Einstein developed the idea that light is energy radiated at the speed of light in the form of wave packets of energy
called.
A. high energy waves
B. electromagnetic waves
C. photons
D. clusters
How will you explain the effect of the absorption and release of heat on the kinetic energy and arrangement of particles of matter?
According to the kinetic theory of matter, changes in heat energy allow for phase transitions between solids, liquids, and gases.
When something is heated, the particles inside move faster and have more energy. When an object warms up, its atoms and molecules gain kinetic energy. When something is heated, its constituent atoms or molecules accelerate in their motion. Matter's kinetic energy can be quickly and easily increased.
When an object warms up, its atoms and molecules gain kinetic energy. The atomic or molecular motions of matter increase with temperature. Lifting a particle's kinetic energy is a breeze. When a substance absorbs heat, the inter-particle bonds in it weaken and break, resulting in a phase transition. If the particles aren't moving faster, there can't be any more heat.
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Select the correct answer. Imagine a Carnot engine has a hot reservoir of 680 K and a cold reservoir of 220 K. What is the efficiency of the engine
According to the given statement 67.7% is the efficiency of the engine.
What is efficiency ?A comparison of the energy output and input in a particular system is called efficiency in physics (and frequently in chemistry). Its definition is the proportion of output energy to input energy, which is provided by the equation: To describe energy in the form of heat or power, this equation is frequently utilized.
n = 1 - (QC/QH)
n = efficiency
QC = Cold Reservoir = 220 K
QH = Hot Reservoir = 680 K
n = 1 - (220 ÷ 680)(÷10)
n = 1 - (22 - 68) (2)
n = 1 - (11 ÷ 34 )
n = (34 - 11) ÷ 34
n = 23 ÷ 34
n = 0.676 * 100
n = 67.6
Therefore, 67.6% is the efficiency of the engine.
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Shawn and his bike have a total mass of 44.0 kg. Shawn rides his bike 1.70 km in 11.0 min at a constant velocity. What is Shawn's kinetic energy?
The velocity of the bike is 2.57 m/s. Then the kinetic energy of the 44 kg mass is 145.3 J.
What is kinetic energy?Kinetic energy of an object is generated by virtue of its motion. Kinetic energy is related to the mass and velocity of the object by the expression written below:
Ke = 1/2 m v²
Given the distance travelled = 1.70 km = 1700 m
time taken = 11 min = 660 s
then velocity = distance/ time = 1700 /660 = 2.57 m/s
Total mass = 44 kg
Ke = 1/2 44 Kg × (2.57)² = 145.3 J
Therefore, the kinetic energy of Shawn and his bike is 145.3 J
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Mess Me and You will have nonsense Explain how this riddle relates to mutation in DNA
Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.
What makes a nonsense mutation nonsense?
A nonsense mutation occurs in the DNA when a sequence changes itself and gives rise to a stop codon rather than a codon specifying an amino acid. The presence of the new stop codon results in the production of a shortened protein that is non-functional.
A nonsense mutation is also known as base substitution which results in a stop codon in such a position from where there was not one before, which causes the premature termination of protein synthesis and, more than likely, a complete loss of function in the finished protein.
So we can conclude that a nonsense mutation always causes a loss of amino acids.
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