Heavy objects fall faster than lighter ones and that no more force is needed on a moving object
Answer:
The length of the sling is increased and the linear velocity of the stone stays the same.
Explanation:
Centripetal acceleration is given by
where <em>v</em> is the linear velocity and <em>r</em> is the radius of motion.
In terms of the angular velocity, <em>ω</em>
<em />, since
From the relation, is directly proportional to the square of the velocity and inversely proportional to the radius.
Hence, an increase in linear velocity results in an increase in the centripetal acceleration if the radius is kept constant. A decrease in the radius also causes an increase of the centripetal acceleration.
Part 1)
here we know that supply took 10 s to reach the ground
so here we will have
Part 2)
Here all the supply covered horizontal distance of 650 m in 10 s interval of time
so here we can say
Answer:
(a) 300 W
(b)0.90 J
Explanation:
(a) The electric power for any circuit element is given as
Here I is current passing in the circuit and V is the voltage.
Given I = 12 A and V =25 V.
Substitute the given values, we get
P = 300 W.
Thus, the power defibrillator deliver to the body is 300 W.
(b) To calculate the electric energy use the relation between electric energy, power and time as
Given t = 3 ms.
Substitute the values, we get
E = 0.90 J.
Thus, the energy transferred is 0.90 J.
The frequency of the wave is 0.5Hertz
<h3>How to calculate the
frequency of a wave</h3>
The formula for calculating the velocity of a wave is expressed as:
velocity = frequency * wavelength
Determine the formula for the frequency
frequency = velocity/wavelength
Given the following parameters
Velocity = 1.00 m/s
wavelength = 2.00m
Determine the frequency
f = 1.00/2.00
f = 0.5Hz
Hence the frequency of the wave is 0.5Hertz
Learn more on velocity of wave here: brainly.com/question/3148541
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