what characteristics are shared by both heating and cooling curves? choose 4

Answer:

Explanation:

Answer:

No work done

Explanation:

When a unit positive charge us taken from one point to another over an equipotential surface then

As no Displacement hence dw=0

No work done

Answer:

The diffrent methods that are used for testing the paperclip and water cohesion on the penny is that first, you put the dish of water on some table, you put a paperclip in it. The second method is using a dish of soap water.

In the elastic collision, the velocity of approach and velocity of separation is the same. The velocity of the separation after the collision will be 45 m/s.

The abrupt, violent coming together in direct contact of two bodies is known as the collision. a falling object and a floor are examples of collisions.

When the distance between two ships decreases while the bearings remain constant, a collision occurs.

Objects have an elastic collision. Before the collision, they approach one another V1​= V2​=45 m/sec

The velocity of the approach is found as;

[tex]\rm = U_1-U_2 \\\\\ = 45-45 \\\\ = 0[/tex]

As we know,

[tex]\rm e = \frac{U_2-U_1}{V_2-V_1}[/tex]

The velocity of separation is found as;

[tex]\rm V_1-V_2[/tex]

and, e=1 for elastic collision.

[tex]\rm U_1-U_2=V_2-V_1[/tex]

[tex]\rm V_2-V_1 = 0 \\\ V_2 = V_1 = 45 \ m/sec[/tex]

In the elastic collision, the velocity of approach and velocity of separation is the same.

Hence the velocity of the separation after the collision will be 45 m/s.

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The complete equation for the nuclear reaction is 10/5 B + 4/2He ------> 13/7N + 1/on

A nuclear reaction is one in which the nucleus of one isotope is changed into the nucleus of another isotope. In this process some particles may be released.

Looking at the reaction equation, we know that the complete equation for the nuclear reaction is 10/5 B + 4/2He ------> 13/7N + 1/on

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Answer:

1st one

identity of the H₂O

When water (H2O) freezes into ice, some of the properties have changed but the identity of the H2O is the same. Explanation; Water can exist in liquid, solid; ice and gaseous state; steam. Freezing occurs when water is continuously cool until it turns to solid ice, water freezes at zero degree Celsius

Hope This Helps

Answer:

A. identity of h20

Explanation:

The centripetal acceleration of the merry-go-round is 0.938 m/s² and the angular acceleration of the merry-go-round is 0.375 rad/s².

The angular acceleration of the merry-go-round is calculated as follows;

α = ω/t

α = 3/8

α = 0.375 rad/s²

The centripetal acceleration of the merry-go-round is calculated as follows;

a = αR

a = 0.375 x 2.5

a = 0.938 m/s²

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Objectivity refers to the ability of a writer to present ideas or situations factually as they are without partiality.

Objectivity refers to the ability of a writer to present ideas or situations factually as they are and not based on his or her own preconceived notions or bias.

To check for objectivity in a web document, one has to ;

Therefore, objectivity means being truthful and impartial.

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Answer:

-292 degrees F

Explanation:

C = 5/9( F -32)

-180 = 5/9 (F-32)

F =  -292 degrees

Answer:

83.1557575 M/s

Explanation:

V²=u²+2as

v=[tex] \sqrt{u ^{2} { + 2as}^{ } } [/tex]

u is initial velocity =0

here a =g

[tex]v = \sqrt{2gs} [/tex]

v=

[tex] \sqrt{2 \times 9.8 \times 6} [/tex]

v= 83.1557575 M/s

Answer:

Atomic and molecular collision processes are the physical interactions of atoms and molecules when they are brought into close contact with each other and with electrons, protons, neutrons or ions. This includes energy-conserving elastic scattering and inelastic scattering.

Answer:

Heat lost thru doors & windows = (100 - 75 - 5) = 20

20% is the fraction of heat lost thru doors and windows

One wants to obtain the largest savings per unit of cost

roof:

200 / 600 = 1/3

150 / 1000 = .15

40 / 2300 = .017

The largest of these is 1/3 so the most benefit would be obtained by insulating the roof

Since heat loss thru the roof depends on heat loss thru the attic, this is the most cost effective in reducing heat loss

The more the difference in temperature between the ceiling and roof (attic) the more heat will be lost thru the roof, so insulating the roof will decrease the heat loss of the attic

Bar 1 has larger angular displacement than bar 2 because it has more revolutions per second due to its larger hole size.

Angular speed is the rate of change of angular displacement with time.

ω = θ/t

where;

The bar with three additional large holes drilled through it (bar 1), will have more rotation per second because its holes are bigger than that of bar 2.

The bar with more rotations or angular speed will have more angular displacement.

Thus, bar 1 has larger angular displacement than bar 2 because it has more revolutions per second due to its larger hole size.

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Answer:

.8

Explanation:

40 times is 40 'cycles'     in 50 seconds

40 / 50 = .8 Hz       ( f= Hz is cycles per second)

By marking the tip and tail locations of a compass in the presence of a magnetic field, the magnetic field lines are traced out.

It is the type of field where the magnetic force is obtained. With the help of a magnetic field. The magnetic force is obtained it is the field felt around a moving electric charge.

By marking the tip and tail locations of a compass in the presence of a magnetic field, the magnetic field lines are traced out.

Hence field line is the correct answer for the blank.

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If an airborne diver goes from a full layout position to a tuck position. Its angular momentum remains the same.

The rotational analog of linear momentum is angular momentum also known as moment of momentum or rotational momentum.

It is significant in physics because it is a conserved quantity. The total angular momentum of a closed system remains constant. Both the direction and magnitude of angular momentum are conserved.

Hence, Its angular momentum remains the same.

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Answer:

brighter

Explanation:

the more light bulbs you add to a series of circuits, the brighter the room will be.

Answer:

A south and north pole (negative and positive pole)

Explanation:

Because opposites attract

Answer:

Sound quality depends on a lot of factors, and it is impossible to definitively state that either analog or digital is fundamentally better. These days, many records are made using playback of a digital file, so vinyl preference cannot be attributed solely to the differences in the way the sound wave is reproduced.

Explanation:

Taking into account the Newton's second law, acceleration depends on position and net force (option D).

Acceleration in a body occurs when a force acts on a body. There are two factors that influence the acceleration of an object: the net force acting on it and the mass of the body.

Newton's second law states that this force will change the speed of an object because the speed and / or direction will change. These changes in velocity are called acceleration.

So, Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object.

Mathematically, Newton's second law is expressed as:

F= m×a

where:

In summary, the acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object. (option D)

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The claim Anders is most likely to make is the failure of the manufacturer to warn about such risk.

This is defined as the possibility of something bad happening and in this case it is electric shock when dropped into the bathtub.

Anders can decide to sue for not warning against risk of electric shock when in contact with water.

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first trip= 50 miles.

second trip= 300 miles.

his new time compared to the old time.

Let speed of the 1st trip x miles / hr. and speed of the 2nd trip 3x / hr.

Speed = Distance/Time

So, times taken to covered a distance of 50 miles on his first trip = 50/x hr.

= 100/x hr

Therefore, his new time compared with the old time was twice as much.

answer= b) twice as much

Answer: option A.

Explanation:

Q= heat removed from the water

m= mass of the water = 80 grams

c = heat capacity of water= 4.18 J/g°C      

Q = -10,032 joules  -10,000 Joules

Negative sign indicates that heat was removed from the water

Answer:

10032 J    must be removed

Explanation:

80 gm  *  (75-45 C) * 4.18 J/g-C  = 10032 J

As you're applying force to the car, the mud which is a sinking surface would but you in the same place as the car is. The car is stuck in the mud and sunk to point where it cannot be pulled out unless an outside force interferes. When you apply force into the car and try to push it out, you would be put in the same situation. You would be experiencing friction which is an opposing force, in this problem, a simple machine such as a pulley would be helpful as it can lift the car from the outside. The car would act as a load and someone or some type of machine can use force to pick the car out of the mud. But if you were to try to push it out of the mud, you would just sink as the force applied would only put you in the same situation as the car, overall resulting in both beings (objects - car, human - "you" POV) being stuck in the same conumdrum.

Answer:

See below

Explanation:

Gravity will pull you down as you stand in the mud.

Additionally , if you do not push exactly horizontally ......like you push UP some , the equal and opposite force will push YOU down into the mud.

  This would be like picking up a weight while you are standing there

      F = ma  will be greater and you will get muddier !

Explanation:

Electromagnetism is the study of the electromagnetic force which is a type of physical interaction that occurs between electrically charged particles.

Hans Christian Oersted discovered the relationship between electricity and magnetism in 1820.

Answer:

S = 1/2 a t^2       distance covered by falling body from speed = 0

300 = 1/2 a 10^2

a = 600 m / 100 s^2 = 6 m/s^2

v = a t = 6 m/s^2 s * 10 s = 60 m/s     speed after 10 sec

S2 = v t + 1/2 a t^2

S2 = 60 m/s * 10 sec + 3 m/s^2 * 100 s^2

S2 = 600  m + 300 m = 900 m

A glance at the speedometer on your vehicle will tell you your overall  instantaneous speed .

The speedometer of a vehicle reveals information about the instantaneous speed of your vehicle. It shows your speed at a particular instant in time.

"A speedometer in a vehicle is an important instrument in a vehicle which shows the current speed of the vehicle and the distance of the vehicle travelled primarily. It is measuring the instantaneous values of speed and distance not the average value of the distance and the speed."

"The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude."

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Answer:

a =  v^2 / R =  ω^2 R        centripetal acceleration

.4 g = .4 * 9.80 m/s^2 = 3.92 m/s^2

R = a / ω^2 = 3.92 / .66^2 =  9.0 m

D = 2 R = 2 * 9.0 = 18.0 m      diameter

Answer:

C ) Warming up

Explanation:

C:

~Chiena

Answer:

B

Explanation:

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