A) travel outside the necleus
Answer:
306.4J
Explanation:
Given parameters:
Displacement = 50m
Force = 80N
Angle = 40°
Unknown:
Work done = ?
Solution:
Work done is the force applied to move a body through a certain distance.
Work done = Force x displacement cos Ф
Work done = 8 x 50 cos 40 = 306.4J
You would use the equation Q=cmΔT, where Q is the amount of heat added, c is the specific heat of the substance (or the amount of heat needed per unit of mass to raise the temperature by one degree Celsius), m is mass, and <span>ΔT is the change in temperature. In this case, Q, heat added, would be equal to (1)(90)(86), which equals 7740 calories.</span>
corrected question:A golf ball is hit with an angle of elevation 60∘ and speed 25ft/s. Find the horizontal and vertical components of the velocity vector. (Your answer must be exact)
Answer:
Horizontal component=12.5ft/s, vertical component=21.65ft/s
Explanation:
The bal moves with a velocity of 25ft/s at an angle of 60°.
The horizontal component(Vx) and vertical component(Vy) of velocity can be calculated as follows;
Vx=Vcosθ
Vy=Vsinθ
Vx=25cos60°
=12.5ft/s
Vy=25*sin60°
Vy=21.65ft/s