Answer: 7 kg
Explanation:
If we decrease the amount of force, and keep all other factors the same, what will happen to the amount of work? The amount of work will go down because the distance will decrease. The amount of work will go up because the distance will decrease. The amount of work will go down because the distance will increase. The amount of work will go up because the distance will increase.
Answer:
The amount of work will decrease because force is directly proportional to work
while distance will increase since it is inversely proportional to force.
Answer:c
Explanation:The amount of work will go down because the distance will increase.
If earth had two moons, how might this affect the way we see eclipses here on earth?
How do you represent an object in a free body diagram?
A)An object is represented in a free-body diagram by an arrow and tail.
B)An object is represented in a free-body diagram by a box with a dot in
the middle, indicating its center of mass.
C)An object is represented in a free-body diagram by a word that says object.
D)An object is represented in a free-body diagram by having the mass labeled.
Clear answer
Answer: the answer is D
Explanation:
1. A force that pushes forward on an object speeds the object up. A force that pushes backwards slows
the object down. What effect does a force that is perpendicular to the object's motion do?
Answer:
If pushing forward speeds it and pushing backward slows it down then force perpendicular to the object will keep it stationary and resist it's motion
Explanation:
Hope my efforts make impact in your life
Consider a situation where the acceleration of an object is always directed perpendicular to its velocity. This means that
(A) the object is increasing speed.
(B) the object is decreasing speed.
(C) the object is not moving.
(D) the object is turning.
(E) this situation would not be physically possible.
Answer:
this situation would not be physically possible
what is the momentum of a bowling ball with mass of 8.9 kg and a speed of 6.0 m / s
Answer:
The momentum of the bowling ball is 53.4 kg-m/s.
Explanation:
We have,
Mass of a bowling ball is 8.9 kg
Speed of the ball is 6 m/s
It is required to find the momentum of the ball. The momentum of an object is given in terms of its mass and speed as :
p = mv
[tex]p=8.9\times 6\\\\p=53.4\ kg-m/s[/tex]
So, the momentum of the bowling ball is 53.4 kg-m/s.
Charge q is 1 unit of distance away from the source charge S. Charge p is two times further away. The force exerted
between S and q ls the force exerted between S and p.
Answer:
The correct answer will be "1/16".
Explanation:
The force or distance between two substances in charge seems to be inversely proportional to the square of the size of the particles.
The exerted force between "S" and "q" will be:
⇒ [tex]Fsq=\frac{{Q}'}{Q} 1^2[/tex] ...(equation 1)
The exerted force between "S" and "p" will be:
⇒ [tex]Fsp=\frac{{Q}'}{Q} 4^2[/tex] ...(equation 2)
Now,
On the comparison of "equation 1" and "equation 2", we get
⇒ [tex]\frac{1}{16}[/tex]
What is the velocity of the objects position vs time graph
Answer: In a position-time graph, the velocity of the moving object is represented by the slope, or steepness, of the graph line. If the graph line is horizontal, like the line after time = 5 seconds in Graph 2 in the Figure below, then the slope is zero and so is the velocity. The position of the object is not changing
Why is it a good idea to explore the health and fitness field in terms of career
options?
O A. There are career opportunities that require a variety of skills and
talents.
O B. It's a growing field.
O c. Many options in this field allow you to help other people through
your job.
D. All of the above.
Answer: I think the answer is option D.
The diagram shows a motion map
Which best describes the motion of the object between 1
and 4 seconds
toata
• The object has decreasing acceleration and increasing
velocity
The object has positive acceleration and eventually
stops
The object has decreasing acceleration and decreasing
velocity
The object has negative acceleration and eventually
stops
Answer:
the object has decreasing acceleration and increasing velocity
How does the velocity change with time in uniform rectilinear motion of an object?
A wave is traveling from one medium to another.If the wave is partially transmitted an partially reflected from the boundary,what will happen to the amplitude of the reflected wave?
Answer: the answer is C
Explanation:
Mercury has a mass of 3.3 e 23 kg and a radius of 2.44 e 6 m. Find Mercury's
gravitational field strength. Show your work (formula, rearrangement, work, answer,
unit, sig dig) (4)
12. Venus has a mass of 4.87 e 24 kg and a radius of 6.05 e 6 m. The gravitational field strength at the surface of Venus is what? m/s2
13. A small Styrofoam ball has a 2.26 nC charge (2.26 x 10°C). Find the electric field strength
5.00 cm (0.0500 m) from the ball. Show your work complete with formula, work, unit and
sig digs) (4)
Answer:
11.) g = 3.695 m/s^2
12.) g = 8.879 m/s^2
13.) E = 8127 N/C
Explanation:
11.) Given that the
Mercury mass M = 3.3 × 10^23kg
Radius r = 2.44 ×10^6 m
Gravitational constant G = 6.67408 × 10^-11 m3kg-1 s^-2
Gravitational field strength g can be calculated by using the formula below
g = GM/r^2
Substitutes all the parameters into the formula
g = (6.67408 × 10^-11 × 3.3 × 10^23)/(2.44×10^6)^2
g = 2.2×10^13/5.954×10^12
g = 3.695 m/s^2
12.) Given that the
Venus mass M = 4.87×10^24kg
Radius r = 6.05 × 10^6 m
Using the same formula for gravitational field strength g
g = GM/R2
Substitute all the parameters into the formula
g = (6.67408 × 10^-11 × 4.87×10^24)/(6.05×10^6)^2
g = 3.25×10^14/3.66×10^13
g = 8.879 m/s^2
13.) Given that the
Charge = 2.26 nC = 2.26×10^-9
Distance d = 0.05m
Electric field strength E can be calculated by using the formula below
E = Kq/d^2
Where
K = electrostatic constant 8.99 × 10^9 Nm2/C2
Substitutes all the parameters into the formula
E = (8.99 × 10^9 × 2.26×10^-9)/0.05^2
E = 20.3174/2.5×10^-3
E = 8126.96 N/C
How is work related to force and displacement?
Answer:
Displacement is the distance and direction an object is moved. Force and work are directly proportional to each other, while force and displacement are indirectly propotional. The equation showing the relationship is W= Fd. OR Work is a scalar. The rate at which work is done or at which energy is transferred. Work is equal to the force parallel to the displacement.
Explanation:
Work is related to force and displacement as the work is the product of the displacement and the force.
What is work done?The total amount of energy transferred when a force is applied to move an object through some distance
The work done is the multiplication of applied force with displacement.
The SI unit of work done by an object is Joules.
IJ is the work done when a force of 1 N displaces an object by 1 m .
work is the product of displacement and force.
Work Done = Force * Displacement
For example, let us suppose a force of 100 N is used to displace an object by a displacement of 50 m then the work done on the object can be calculated by the above-mentioned formula
work done = 100 N ×50 m
=5000 N m
Thus, we can say the work done on an object depend on the force as well as the displacement, as the work is the product of the force and the displacement
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10. Almost three-quarters of household energy use is due to the following:
• home furnaces and air conditioners
• water heaters
• washers and dryers
• lighting
For each of these uses of energy, give two reasonable ways to reduce household
energy consumption
Answer: Energy consumption and sustainability is important so that it remain available for future generation.
Explanation:
1. The home furnaces are likely to require fuel like coal, which will directly emit carbon dioxide and carbon monoxide gases. These should be replaced with the electrical furnaces. The old or more power consuming air conditioners should be replaced with new ones.
2. The water heaters should be tankless so their capacity to heat more water could be possible. The water heaters should be electricity saving.
3. Washer and dryers should be water savy and electricity savy. A front-loading washing machine is useful energy saver.
4. The LED lights are more electricity saving than conventional bulbs. Halogen lights are also electricity saving.
Which of the following is NOT a vector quantity?
(A) Acceleration
(B) Average velocity
(C) Linear momentum
(D) Potential energy
(E) Force
Answer:
D
Explanation:
Acceleration has both magnitude and direction. because velocity is vector quantity
average velocity is vector
linear momentum = mass× velocity
therefore it's also vector
force = mass× acceleration
acceleration is vector therefore force also vector
potential energy= mgh
energy in any form is scaler quantity therefore potential energy too is a scaler quantity.
Together, two students exert a force of 825 N in pushing a car a distance of 35 m.
How much work do the students do on the car?
Answer:
28875 Joule
Explanation:
W = F * d
W = 825*35 = 28875 J
The work done by the students in pushing a car at a distance of 35 meters would be 28875 Joules.
What is work done?The total amount of energy transferred when a force is applied to move an object through some distance
The work done is the multiplication of applied force with displacement.
Work Done = Force * Displacement
As given in the problem Together, two students exert a force of 825 Newtons in pushing a car at a distance of 35 meters, then we have to find out the work done by the students,
The force exerted by the students = 825 Newtons
The distance moved by car = 35 meters
work done by students = 825×25
=28875 Joules
Thus, the work done by the students would be 28875 Joules.
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do you believe there is an end to the universe? Explain your answer
Acceleration can be defined as the rate at which velocity
Answer here
Answer:
Acceleration can be defined as the rate at which velocity increases per second.
Assuming that the acceleration unit is
m/s^2
What is nuclear energy?
A. Stored energy due to an object's location or position
O.B. Energy carried by moving electrons
O C. Energy due to an object's motion
O D. Energy released from atoms
Answer:
the answer from nod energy from atoms
A car accelerates uniformly from 0 km/hr to 60 km/hr in 4.5 seconds. Which one of the following choices best represents the acceleration of the car?
(A) 13.3 m/s2
(B) 9.8 m/s2
(C) 4.8 m/s2
(D) 3.7 m/s2
(E) 0.37 m/s2
please show work
Answer:
The acceleration of the car is [tex]3.7\ m/s^2[/tex].
Explanation:
It is given that,
Initial speed of the car, u = 0
Final speed of the car, v = 60 km/h = 16.66 m/s
Time, t = 4.5 s
We need to find the acceleration of the car. It is equal to the change in velocity divided by time taken. It can be given by :
[tex]a=\dfrac{v-u}{t}\\\\a=\dfrac{16.66-0}{4.5}\\\\a=3.7\ m/s^2[/tex]
So, the acceleration of the car is [tex]3.7\ m/s^2[/tex]. Hence, this is the required solution.
Which figure represents the electric field lines of two negative point charges?
Help
Answer:
The question is incomplete because the options are not given. We'll solve this question with the options.
There are two properties of negative charges which we have to consider to find the figure of its electrical field.
Firstly, for a negative charge, the electrical field lines are always directed radially outwards and they don't intersect.
Secondly, we know that similar charges repel each other, so there will be no electrical field present directly between these two negative charges. Electrical field line will be present between two charges only when there is a force of attraction.
Taking both of these facts into consideration, the electrical field line between two negatives is represented by the figure below.
Answer:
Figure C
Explanation:
Got it correct on Edmentum
The direction of a vector that points somewhere between due north and due
east is measured in
A. centimeters
B. degrees
C. hours
D. miles
Answer: B
Degree
Explanation:
The direction of vectors are always measured in angles starting from the north. That is, in an anticlockwise direction. But the unit of angle is degree. Therefore, the direction of a vector that points somewhere between due north and due east is measured in degree.
Answer:degrees
Explanation:
Remembering the Battle of Bunker Hill what did general Harry and his troops do
A truck accelerated from a velocity of 20 m/s to velocity of 5 m/s in a period of 5 seconds. Determine the acceleration of the truck with the proper units.
A. 2 meters/ second
B. -3 meters/ second
C. 3 meters/ second squared
D. -3 meters/ second squared
An object with a mass of 120 kilograms is moving at a velocity of 30m/s what’s its momentum
Explanation:
Momentum = mass × velocity
p = mv
p = (120 kg) (30 m/s)
p = 3600 kg m/s
Given:
velocity, v = 30m/s
mass, m = 120kg
Therefore, momentum
p = mv
p = 120kg * 30m/s
p = 3600 kgm/s = [tex]3.6 * 10^3 kgms^{-1}[/tex]
What is a simple definition of momentum?A property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity broadly.
What is momentum used for in physics?Momentum is a vector quantity, it has both magnitude and direction. Since momentum has a direction, it can be used to predict the resulting direction and speed of motion of objects after they collide.
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What is the momentum of a bowling ball with a mass of 8.9 and a speed of 6.0 m/s
Answer:
53 kg m/s
Explanation:
Momentum = mass × velocity
p = mv
p = (8.9 kg) (6.0 m/s)
p = 53.4 kg m/s
Rounded to 2 significant figures, the momentum is 53 kg m/s.
A ball is dropped from a height of 23.5 meters. Assuming no air resistance, how many seconds will it take the ball to hit the
ground?
Answer:
About 2.19 seconds
Explanation:
[tex]d=v_ot+\dfrac{1}{2}at^2[/tex]
Since the ball is dropped from rest, there is no initial velocity, and you can write the following equation:
[tex]23.5=\dfrac{1}{2}(9.8)t^2 \\\\t^2\approx 4.79 \\\\t\approx 2.19s[/tex]
Hope this helps!
For a current to flow continuously through a circuit, the circuit must be:
Answer:
An electrical current is an electrical charge flowing around a circuit. Carried by billions of tiny particles called electrons, the charge is already in the wires.
Explanation:
There are three basic conditions for the electric current flow is to be given below:-
The loop must be shuttered where current throws occur. There must be some possible distinctions in the chain. The medium in which current flows will be a conductor (but flow in the semiconductor at a higher temp. current).
What is the proper function of a linkage? *
1 point
a) transferring energy
b) transferring speed
c) transferring money
d) transferring weight
asap plz, for science loverz
brainliest for the best answer!
Answer:
a) transferring energy
Explanation:
A linkage is an assembly of parts connected together to control forces and movement. The connections between links are called joints and are used for ensuring movement, pure rotation or sliding.
Linkages provides a means in which kinetic energy is being transferred in different directions within a system. This Linkages can be used to Change force direction, size of force applied or the motion created by the force.
