1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
qwelly [4]
3 years ago
9

Riley is cleaning his room(a once a year activity) and pulls the Hoover with a force of 8 N a total distance of 20 metres. How m

uch work does he do? Where does this energy end up​
Physics
1 answer:
Radda [10]3 years ago
7 0

Answer:

160J

Explanation:

Given force = 8N and total distance = 20 meters

Workdone = force x distance

= 8 x 20

= 160J

Therefore, workdone by Riley in pulling the hoover is 160J

You might be interested in
What type of collision is being described in each statement.
Ostrovityanka [42]

Answer:

inelastic, since the girl moves in the same direction as the thrown ball

Explanation:

yess this ok

UwU

7 0
2 years ago
What is the average acceleration during the time interval 0 seconds to 10 seconds?
Hunter-Best [27]

Answer:

yea its D  .

Explanation:

3 0
3 years ago
A car moving has a speed of 35 m/s. What acceleration would it have if it took 5.0 s to come to a complete stop?
Pepsi [2]

Answer:

7

Explanation:

7 0
3 years ago
Read 2 more answers
Rex decides to launch a priceless vase into the air at a 90-degree angle. The initial velocity vase is +7.0 m/s. Dylan claims th
Sergeu [11.5K]

Answer:

D. Dylan is incorrect because a 90-degree launch angle results in the largest vertical range​

Explanation:

Projectile is the motion of an object thrown into space. When an object is thrown into space, the only force which acts on it is the acceleration due to gravity.

An object thrown into space would reach maximum height (vertical range) if it is launched at an angle of 90 degrees. For maximum horizontal range, the object needs to be launched at an angle of 45 degrees.

Therefore Dylan is incorrect because a 90-degree launch angle results in the largest vertical range​

6 0
3 years ago
Skater begins to spend with arms held out at shoulder height. The skater wants to match the speed of the spin to the beat of the
Aleksandr [31]

Answer:

the moment of inertia with the arms extended is Io and when the arms are lowered the moment

I₀/I > 1    ⇒   w > w₀

Explanation:

The angular momentum is conserved if the external torques in the system are zero, this is achieved because the friction with the ice is very small,

           L₀ = L_f

           I₀ w₀ = I w

          w =\frac{I_o}{I} w₀

where we see that the angular velocity changes according to the relation of the angular moments, if we approximate the body as a cylinder with two point charges, weight of the arms

          I₀ = I_cylinder + 2 m r²

where r is the distance from the center of mass of the arms to the axis of rotation, the moment of inertia of the cylinder does not change, therefore changing the distance of the arms changes the moment of inertia.

If we say that the moment of inertia with the arms extended is Io and when the arms are lowered the moment will be

        I <I₀

        I₀/I > 1    ⇒   w > w₀

therefore the angular velocity (rotations) must increase

in this way the skater can adjust his spin speed to the musician.

7 0
3 years ago
Other questions:
  • Suppose a drinking straw is in a glass of water. Someone blows air across the top of the straw. The water level in the straw ___
    6·2 answers
  • What is the maximum efficiency of a heat engine whose operating temperatures are 590 ?c and 325 ?c?
    12·1 answer
  • A mass M is attached to an ideal massless spring. When this system is set in motion with amplitude A, it has a period T. What is
    5·1 answer
  • Which way do electrons within a rectangular rod move when a negatively-charged balloon is brought near a positively-charged rod?
    7·1 answer
  • Suppose a horizontal wind blows with a speed of 12.6 m/s outside a large pane of plate glass with dimensions 3.00 m x 1.80 m. As
    11·1 answer
  • A uniformly charged rod of length L = 1.3 m lies along the x-axis with its right end at the origin. The rod has a total charge o
    11·1 answer
  • What is the rate at which an object moves but doesn't include direction?
    12·1 answer
  • passengers on an airplane move from rest to 73 meters per second before the airplane takes off. if the airplane takes 100 second
    12·1 answer
  • U
    14·1 answer
  • What is the equilibrium constant for the following reaction at 25 °c?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!