The answer is having fewer neutrons than protons or electrons.
Answer:
61578948 m/s
Explanation:
λ = λ
687 = 570
= 61578948 m/s
So Slick Willy was travelling at a speed of 61578948 m/s to observe this.
100 Joules have been used to roll the object up the ramp, but only 90 Joules were actually needed to lift the object, this means that 10 Joules have been wasted in the form of heat due to the friction between the object and the ramp, and this corresponds to
so, 10 % of the energy.
Answer:
4.62N
Explanation:
Since the motion covers 1 circle (or 2π rad) per 0.8 seconds, its angular velocity is
Radius of the circular motion is r = 75 cm or 0.75m. We can calculate the centripetal acceleration of this mass
From Newton's 2nd law, we calculate the centripetal force, which is also the tension of the string: