Answer:
A,B,C,D, and F are correct
Explanation:
Answer:
110.7 J
Explanation:
Hooke's law is represented by the formula:
F = ke where F is the force in Newton, K is force constant and e is extension in m
work done = 1/2ke² = 1/2 K ( e² - e₀²) and e₀ is the extension at relaxed length
e₀ =0
work done = 0.5 × 82N/m × (2.70 m)² = 110.7 J
Answer:
1.4×10⁵ N
Explanation:
Find the acceleration.
Given:
v₀ = -1000 m/s
v = 0 m/s
t = 120 s
Find: a
v = at + v₀
(0 m/s) = a (120 s) + (-1000 m/s)
a = 8.33 m/s²
Find the force.
∑F = ma
F − mg = ma
F = mg + ma
F = m (g + a)
F = (75600 / 9.8) (9.8 + 8.33)
F = 1.4×10⁵ N
Answer:
Gamma rays is used for nuclear power and for medical treatment
