2. Starting from the origin, a person walks 4 km east during first day, and 7 km west the
1 answer:
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The velocity of the wave is 40 m/s
Explanation:
The relationship between the velocity of a wave and its frequency and wavelength is given by
where
v is the velocity
f is the frequency
is the wavelength
For the ocean wave in this problem, we have:
(wavelength)
f = 4.0 Hz (frequency)
Therefore, its velocity is
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Answer:
Option (c).
Explanation:
Given that,
Mass of a cart, m = 0.8 kg
Tension in the car, F = 4 N
Net force, F = ma
a is acceleration of the cart.
So,
So, the acceleration of the cart is .