The table shows experimental data of the magnitude of four forces exerted on a 2kg object as it slides across a horizontal surface. Which of the following could represent the magnitude of the net force that is exerted on the object? Select two answers.
Answers
Answer:
6N and 10N
Explanation:
The forces acting along the horizontal axis arw the horizontal force applied and the frictional force.
Frictional force is a force that opposes the horizontal force (moving force)
First we need to get the sum of force along the horizontal as shown
\sum Fx = Horizontal force - frictional force
\sum Fx = 8N - 2N
\sum Fx = 6N
Hence one of the magnitude of the net force exerted on the object is 6N
For the forces along the vertical component;
The forces are the weight, force of gravity(acting downward) and the normal force acting upward
Given
Weight = mass × acceleration die to gravity
Weight = 2×10 = 20N
Normal force = 10N
\sum Fy = (weight)-normal force
\sum Fy = (20)-10
\sum Fy = 20-10 = 10N
Hence the other net force acting on the object is 10N
The required options are 6N and 10N
Related Questions
Which is a true statement about a series circuit?
A.) Every part of the circuit is positively charged.
B.) The current flow through every part of the circuit is the same.
C.) The current through the circuit can take several paths.
D.) Every part of the circuit is negatively charged.
Please help, I'm on a time limit!
Answers
the answer is B your welcome
The true statement about a series circuit is: the current flow through every part of the circuit is the same. Hence, option (B) is correct.
What are series and parallel circuit?Electrical networks and two-terminal components can be linked either serially or parallelly. The electrical network that results will have two terminals and be capable of operating in either a series or parallel topology.
It depends on your point of view whether a two-terminal "thing" is an electrical network (like resistors connected in series) or an electrical component (like a resistor). In this article, a two-terminal "thing" that participates in series/parallel networks will be referred to as a "component."
Each component connected in series travels the same "electrical path" and carries the same amount of current—equal to the network's current—through it.
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A car starts from rest down a straight, flat road and gets up to 22 m/s after 33 seconds.
a) Find acceleration.
b) How far did it go during this time?
Answers
Answer:
Explanation:
Acceleration = distance / time
= 22 / 33 = 2/3
HELP PLEASE!!! is this right? if not please tell me the right answer
write the equation for calculating relative velocity in one dimensional.
Answers
Answer:
Your answer is correct, Option B
answer these questions plz
Answers
1. The property of a conductor by virtue of which it posses the flow of electric current through it is called resistance.
2. The resistance of a conductor depends on the cross sectional area of the conductor and it's resistivity.
3.This id due to the fact that the resistance of a wire is inversely proportional to the square of its diameter.
4.Due to at high temperatures , the alloy donot oxidize. Alloy doesn't melt readily and get deformed.
Which type of thermal energy transfer does a foil wrapping reduce the most? O A. Conduction O B. Translation O C. Radiation O D. Convection
Answers
The foil reduces radiation the most in terms of thermal energy transfer. Thermal energy transfer is the movement of heat from one place to another. The four types of thermal energy transfer are radiation, conduction, convection, and advection. The correct answer is option OC.
Foil wrapping reduces radiation as the most type of thermal energy transfer. Thermal energy transfer is the movement of energy from one place to another. There are four types of thermal energy transfer: conduction, convection, radiation, and advection. The foil wrapping reduces radiation the most. When there is a foil wrapped around food, the foil traps the heat inside the food, which reduces the radiation energy transfer. Radiation is the heat transfer that occurs in the form of electromagnetic waves. It requires no matter to move, which is why it can occur in the vacuum of space. Radiation transfer can be absorbed, transmitted, or reflected. Therefore, the correct answer is option OC.For more questions on radiation
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A child’s toy arrow is launched horizontally from a bow at a speed of 8 m/s from a second story window 4 meters above the ground, and the sticks in a pile of sand.
A. How far away is the pile of sand?
B. What were the horizontal and vertical speeds of the arrow when it hits the sand?
C. What angle does the arrow make with the ground when it sticks in the sand?
Answers
using s=1/2 g t^2
t^2= 8/9.8= 0.82 seconds
This means the sand was s = 8 * 0.82 = 6.5m away
The horizontal speed stays constant at 8 m/s
The vertical speed =.82 * 9.8 = 8.0 m/s
As the two velocities are equal the angle must be 45 degrees to the horizontal
True or False? Mechanical waves do NOT need a medium to travel through.
Answers
Answer:
True
Explanation:
Mechanical waves require a medium in order to transport their energy from one location to another.
An object traveling at a constant velocity has no net force. True or False
Answers
Hope this helps
How long does a dream typically last near the end of the sleep cycle, just before waking?
A.
about 5 minutes
B.
about 15 minutes
C.
about 30 minutes
D.
about 50 minutes
pleaseeeee hurryy
Answers
Answer:
C) about 30 minutes
Explanation:
edge 2023
For every ______
there is an equal and opposite ______.
a. interaction & action b. action & reaction
c. action & interaction
Answers
It's Action and Reaction
HELP PLEASE!
write the equation for calculating relative velocity in one dimensional.
Answers
Anwer:
Key Equations
Position Vector: `n r (t) = (t)^j+y
Total acceleration: `n a = `n aC
+ `n aT
Position Vector in frame S is the position Vector in frame S` plus the vector from the origin of S to the origin of S`: `n rPS = `n rPS`
+ `n rS`S
Relative velocity equation connecting two references frame: `n vPS = `n vPS`
+ `n vS`S
Lisa has a mass of 52 kilograms. How much does Lisa weigh in Newtons? How much does she weigh in pounds? (Use g = 9.8 m/s)
Answers
Answer: 510 in Newton’s and 115 lbs
Explanation:
Considering the definition of weigh, Lisa weighs 0.5096 N or 0.1146 pounds.
Mass is the amount of matter that a body contains, while weight is the action exerted by the force of gravity on the body. That is, weight is a measure of how much force gravity exerts on the mass of an object.
The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.
Weight can be calculated as the product of mass and acceleration due to gravity:
W=m×g
In this case, you know:
m= 52 g= 0.052 kg (being 1000 g=1 kg)g=9.8 m/s²Replacing in the definition of weigh:
W=0.052 kg×9.8 m/s²
Solving:
W= 0.5096 N
1 newton equals 0.2248 pound. Then W=0.5096 N= 0.1146 Pounds
Finally, Lisa weighs 0.5096 N or 0.1146 pounds.
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Which of the following objects are subject to the law of universal gravitation? (circle all that apply)
a. Satellites
b. Water
c. Frogs
d. Stars
Answers
Satellites, water, frogs, and stars all have mass as they are all composed of matter. Thus, all four answer choices should be circled.
An object is thrown downward from the top of a 175 meter building with an initial speed of 10m/s
Answers
Answer:
Explanation:
we can look for the final velocity of the object using the eqaution of motion as shown:
v² = u²+2gH
v is the final velocity
u is the initial velocity = 10m/s
g is the acceleration due to gravity = 9.81m/s²
H is the height of the object = 175m
Subxtitute the given parameters inti the formula and get v:
v² = 10²+2(9.81)(175)
v² = 100+3433.5
v² = 3533.5
v = √3533.5
v = 59.44m/s
Hence the final velocity of the object is 59.44m/s
How much energy must be absorbed by water with a mass of 0.5 kg in order to raise the temperature from 30°c to 65°C?
Water has a specific heat of 4,190 j/kg°C
Answers
Answer:
Q = 67.04 [J]
Explanation:
In order to solve this problem, we must use the following equation of thermal energy, which relates mass to specific heat and temperature change.
[tex]Q = m*c_{p}*(T_{2} -T_{1})[/tex]
where:
Q = thermal energy [J]
m = mass = 0.5 [kg]
Cp = specific heat = 4,190 [J/kg°C]
T2 = final temperature = 65 [C]
T1 = initial temperature = 30 [C]
Now replacing:
Q = 0.5*4.190*(65 - 30)
Q = 67.04 [J]
Mark has a ball. He tosses it into the air. In 3.7 seconds, it falls to the ground. Why did this happen to Mark's ball? Explain.
Answers
Mark's ball falls to the ground because there is a gravitational pull from Earth's core. There are chemicals and elements in the Earth that make this pull. Mark's ball does not stay in the air for this reason.
Hope this helps you!
Answer:
This happened because there is a gravitational pull.
Explanation:
Waves that make up the visible part of the electromagnetic spectrum have
Answers
Answer:
the visible part of the electromagnetic spectrum is somewhere between 2 and 10 1.24 eV and x rays 1 to 12 keV
Explanation:
the visible part of the electromagnetic spectrum is somewhere between 2 and 10 1.24 eV and x rays 1 to 12 keV
A 0.142 kg baseball on a 0.8 meter table has 1.11 J of potential energy. It falls. How much kinetic
energy, in Joules, will it have on the way down when it reaches a height of 0.25 meters? Assume
mechanical energy is conserved.
Answers
Answer:
0.04544 J
Explanation:
KE= 1/2 the mass times V squared
KE=1/2(0.142) * (0.8)^2
KE= 0.071 * 0.64
KE=0.04544
The density of water is 1.00 g/cm3. The density of ethanol is 0.80 g/cm3. What is the volume of ethanol, in cm3 that has the same mass as 100 cm3 of water?
Answers
Explanation:
Given that,
The density of water is 1 g/cm³
The density of ethanol is 0.8 g/cm³
We need to find the volume of the ethanol that has the same mass as 100 cm³ of water.
Density=mass/volume
For water,
[tex]d=\dfrac{m}{V}\\\\m=dV\\\\m=1\ g/cm^3\times 100\ cm^3\\\\m=100\ g[/tex]
For ethanol,
[tex]d=\dfrac{m}{V}\\\\V=\dfrac{m}{d}\\\\V=\dfrac{100\ g}{0.8\ g/cm^3}\\\\V=125\ cm^3[/tex]
Hence, 125 cm³ of ethanol has the same mass as 100 cm³ of water.
Answer:
1.00 g/cm3
Explanation:
Someone please help me!!!
Answers
Answer:
i don’t understand
Explanation:
Answer:
There's no question-
What makes an electric charge?
Answers
Answer:
Most electric charge is carried by the electrons and protons within an atom. Conversely, two protons repel each other, as do two electrons. Advertisement. Protons and electrons create electric fields, which exert a force called the Coulomb force, which radiates outward in all directions.
story on where there is a will there's a way
Answers
How many hours would it take a plane to fly 1,500 miles if it was moving at a constant speed of 400 miles/hour.
Answers
It would take 3 hours and 45 minutes, for a plane to fly 1,500 miles if it was moving at a constant speed of 400 miles/hour.
Calculation
Round off 3.75 to the nearest one to give the hour value i.e., 3.The minutes are obtained by multiplying the fractional portion of the decimal value by 60, or 0.75 x 60 = 45.we have 3 hours and 45 minutes.What is speed?The distance traveled in a unit of time is called speed. It refers to a thing's rate of movement.This scalar quantity known as speed is the velocity vector's magnitude, It has no clear direction.A faster rate of movement is indicated by a higher speed. It is travelling more slowly if the speed is lower. It has zero speed if it isn't moving at all.The formula: can be used to determine the constant velocity of an object traveling straight forward.r = d / twhere,
r stands for rate or speed (sometimes denoted as v, for velocity)
d is the traveled distance.
t is the amount of time needed to finish the movement.
The average speed of an object over a period of time is given by this equation. We can see the object's average speed here, however at some moments over the time frame, it may have been moving faster or slower.As the time interval gets closer to zero, the maximum average speed is reached. The speed at that moment is what you see when you look at a speedometer in an automobile. While you may have briefly reached a speed of 60 mph, your average speed over the course of 10 minutes could have been much higher or much lower.M/s is the SI unit of speed (meters per second). Miles per hour or kilometers per hour are the most widely used units of speed in everyday life. A typical speed at sea is in knots, or nautical miles per hour.To learn more about speed, refer to https://brainly.com/question/24739297
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If a person pulls a cart to the right at 5N of force and another person pulls to the left with a 15N of force? What is the net force and it what direction
Answers
Answer:
The net force is 10 [N] acting to the left
Explanation:
To solve this type of problem we must make a sum of the forces acting on the cart, since the forces are vectors, we know that vectors can be added, In this way forces that go in the same direction are added and forces in opposite directions are subtracted.
FL = force to the left = - 15 [N]
FR = force to the right = 5 [N]
FT = Resultant force [N]
- 15 + 5 = FT
FT = - 10 [N]
The negative sign tells us that the force acts to the left.
Which example is of researcher bias in interpreting data?
A scientist wishes to determine the area of an ice sheet. To do so, he relies on spectrographic images sent by satellite.
A health official investigates the spread of HIV in her city. She takes a census of the HIV status of every adult resident.
A geologist wants to determine whether the water level of an aquifer is declining. To find the answer, he digs a well.
A researcher seeks to prove that babies smile at two months old. She counts some confused expressions as smiles.
Answers
Answer:
A researcher seeks to prove that babies smile at two months old. She counts some confused expressions as smiles.
Explanation:
This is the answer because its not actual date due to the fact she's using her opinion to decided whether or not the expression a baby is making is a smile, whereas the other answers had factual data involved.
100 kg = how many pounds
Answers
Answer:
220.462 pounds exact but you can round to 220 pounds
Explanation:
1 a rectangular block of steel measures 4cm * 2cm* 1.5cm. its mass is 93 .6g
a) calculate the density of steel
b)steel is made up of almost entirely of atoms butt is denser than iron
suggest a reason for this
Answers
a) density = 93.6g/12cm³
= 7.8g/cm³
b) The reason is alloying
Explanation:
volume of the rectangular block = l× b × h
= (4 × 2 × 1.5)cm
= 12 cm³
density = mass/ volume
mass = 93.6g
volume = 12cm³
therefore,
density = 93.6g/12cm³
= 7.8g/cm³
b) °Steel is formed when alloying Iron with carbon.
°Alloying improves the physical properties of the metals and non-metals
2. Kymel is competing to see who is the fastest runner on the football team. Kymel uns
from rest to a speed of 4 m/s when he reaches the 20 meter mark in just 2 minutes.
What was Kymel's acceleration during the run?
a. 2 m/s2
b. 30 m/s2
c. 0.5 m/s2
d. 0.03 m/s2
PsX
Answers
Answer:
3
Explanation:
I just really need points man sorry
What is the weight of a 4.5 kg mass on Earth?
Answers
Answer:
7.535×10^25 earth mass
Explanation:
for an approximate result,divide the mass value by 9.223e+18
the volume of a cube is 64 meter cubic. what is the length of the side of the cube?