When positively charged particles were radiated onto a gold atom, a few of the particles bounced back. Which of the following ca
2 answers:
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- Hence higher the radius lower the voltage
- Lower the voltage higher the capacitance .
Refer to the diagram shown below.
By definition momentum = mass * velocity.
Before throwing the ball:
The initial momentum is
P₁ = 0.
After throwing the ball:
Let u = the backward velocity of the quarterback.
The momentum is
P₂ = (0.43 kg)*(15 m/s) + (80 kg)*(- u m/s)
Conservation of momentum requires that
P₂ = P₁
6.45 - 80u = 0
u = 6.45/80 = 0.0806 m/s
Answer: 0.08 m/s backward
By definition momentum = mass * velocity.
Before throwing the ball:
The initial momentum is
P₁ = 0.
After throwing the ball:
Let u = the backward velocity of the quarterback.
The momentum is
P₂ = (0.43 kg)*(15 m/s) + (80 kg)*(- u m/s)
Conservation of momentum requires that
P₂ = P₁
6.45 - 80u = 0
u = 6.45/80 = 0.0806 m/s
Answer: 0.08 m/s backward
Answer:
Revolving velocity = 2 km/s
Explanation:
Velocity of circular motion = Radius x Angular velocity.
Angular velocity, ω = 2πf, where f is the frequency of circular motion.
Here frequency, f = 2 revolutions per minute
f = revolutions per second.
Angular velocity, ω = 2πf = 0.209 radians/second.
Radius = 6 miles = 6 x 1.6 x 10³ = 9.6 x 10³ m.
Linear velocity = 9.6 x 10³ x 0.209 = 2006.4 m/s= 2 km/s
Revolving velocity = 2 km/s