Answer:
C. Alpha
Explanation:
Gamma radiation, unlike alpha or beta, does not consist of any particles, instead consisting of a photon of energy being emitted from an unstable nucleus. Having no mass or charge, gamma radiation can travel much farther through air than alpha or beta, losing (on average) half its energy for every 500 feet.
Answer:
Vector quantity
Explanation:
What is a vector quantity?
-> A vector quantity has both direction and magnitude
What is scalar quantity?
-> S scalar quantity has only magnitude
[] Based on these definitions, 9.7 x 104 km East is a vector quantity because it includes a direction, East.
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Answer:

Explanation:
Torque and energy of an electric dipole in an electric field we find:
Answer:
Height of ramp = 17.49 m
Explanation:
We have equation of motion ,
, s is the displacement, u is the initial velocity, a is the acceleration and t is the time.
Considering horizontal motion of skier
Initial velocity = 33 m/s, Displacement = 63 m, acceleration = 0 and we need to find time taken to reach ground by the skier.

The vertical distance traveled in 1.909 seconds is the height of ramp
Initial velocity = 0 m/s, acceleration = acceleration due to gravity = 9.8
, time = 1.909 s and we need to find displacement.

So height of ramp = 17.49 m