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aleksley [76]
3 years ago
8

A steady beam of alpha particles (q = + 2e) traveling with constant kinetic energy 14 MeV carries a current of 0.20 µA.

Physics
1 answer:
TiliK225 [7]3 years ago
7 0

Answer: (a) 1.875*10^12

(b) N = 4.8281*10^3

(c) 7MV

Explanation:

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What is the total kinetic energy of a 0.15 kg hockey puck sliding at 0.5 m/s and rotating about its center at 8.4 rad/s
AlexFokin [52]

Answer:

K=0.023J

Explanation:

From the question we are told that:

Mass m=0.15

Velocity v=0.5m/s

Angular Velocity \omega=8.4rad/s

Generally the equation for Kinetic Energy is mathematically given by

K=\frac{1}{2}M(v^2+\frac{1}{2}R^2\omega^2)

K=\frac{1}{2}0.15(0.5^2+\frac{1}{2}(0.038)^2.(8.4rad/s^2))

K=0.023J

8 0
3 years ago
1. When an object is at rest, not moving, and is crashed into by another
wlad13 [49]

Answer:

both experience forces or at least a force

Explanation:

it would go in the direction the other object

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si if going right then right if left then left

plus or minus

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3 years ago
2. The substances that undergo change in a chemical reaction are called
AVprozaik [17]
Reactants

In a chemical reaction, the substances that undergo change are called reactants. The new substances formed as a result of that change are called products.
4 0
3 years ago
A man stands on his balcony, 130 feet above the ground. He looks at the ground, with his sight line forming an angle of 70° with
jenyasd209 [6]

Answer:

d =  380 feet

Explanation:

Height of man = perpendicular= 130 feet

Angle of depression = ∅ = 70 °

distance to bus stop from man = hypotenuse = d = 130 sec∅

As sec ∅ = 1 / cos∅

so d = 130 sec∅    or d = 130 / cos∅

d = 130 / cos(70°)

d =  380 feet

8 0
3 years ago
What is the current hypothesis on how the earths moon formed
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The earth and moon were created By a collision between two planetary objects Each five time the size of mars. Is the newest hypothesis. 
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