Answer:
A:- 50 J
B:- 500 J
Explanation:
a) Given that a 25 N force is applied to move the box. Also the floor is having friction surface.
So in order to move the box, the floor should have friction of atleast 25 N.
∴ friction = 25 N
Work done = force * displacement of box
Given, the box is moved 2 m across the floor
So, Work done = friction * 2 m
= 25 * 2
= 50 J
b) Given, the box is having weight of 250 N weight
Gravitational force is acting on the box which is equal to (mass * gravity)
∴ Force = 250 N
The box is lifted 2 m above the floor.
So, displacement = 2 m
Work done = force * displacement of box
Work done = 250 * 2
= 500 J
Answer:
At least 10 major federal laws deal with protecting the environment and the health and safety of U.S. residents. This is in addition to the multitude of other federal acts, rules, and administrative environmental regulations
Explanation:
Well, i think there are more than one answers for this question. What influence whether or not bricks slide down the bed of the dump trucks will depends on :
- The mass of the Bricks
- The angle of the Bed
- The coefficient of static friction between the bricks and the bed
- the coefficient of kinetic friction between the bricks and the bed
hope this helps
The electrical charge of an election is negative!
One electron<span> itself has a negative </span>charge<span> of 1.6021766208 × 10 </span>−19<span> coulomb.
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Message me if you have any further questions!
Without an atmosphere, the equatorial curve would show minimum daily values on the solstices in June when the sub-solar point is located at 23.5°N and in December when the sub-solar point is at 23.5°S latitude.
Explanation:
At the sub-solar point, the sun strikes directly at the surface with an angle of 90 degrees at a given point.
Solistice refers to that point in time when the sun’s zenith is located at the farthest point from the equator.
During summer solistice on June 21, the sun’s zenith reaches northernmost point, sub-solar point is fixed at 23.5°S Tropic of Cancer making the earth tilt 23.4 degrees
During winter soliscitse on December 21, the sub-solar point is fixed at) Tropic of Capricorn.