Answer:
μ = 0.4
Explanation:
As, the object is moving at a constant speed. Therefore, the unbalanced force on it must be equal to zero. So, the frictional force on the object must be equal to the force applied to it:
F = frictional force
F = μR = μW = μmg
where,
F = Applied Force = 20 N
μ = coefficient of friction between wall and floor = ?
m = mass of block = 5 kg
g = 9.8 m/s²
Therefore,
20 N = μ(5 kg)(9.8 m/s²)
μ = 20 N/49 N
<u>μ = 0.4</u>
A solar panel are most efficient under natural sunlight, however, a solar panel can work using artificial light simply because a solar panel collects photons which collide with silicon atoms transferring their energy which cause them to lose electrons.
Morning Your answer is A I had this question this morning and I got it correct so <em>I hope this helps!</em>
As you coast down a long hill on your bicycle, potential energy from your height is converted to kinetic energy as you and your bike are pulled downward by gravity along the slope of the hill. While there is air resistance and friction slowing you down by a little bit, your speed increases gradually until you apply the brakes, causing enough friction to slow yourself and the bike to a stop at the bottom