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A bus was initially traveling with a velocity of 50 km/hr east. Later it was observed traveling with a velocity of 100 km/h north. What was the change in velocity of the bus?
Unpolarized light is incident on a series of two Polaroid sheets. The intensity of the light emerging from the second sheet is 18.4 percent of the intensity of the light incident on the first sheet. Find out the angle between the transmissions axe..
A positive charge of 4.80 C is fixed in place. From a distance of 3.60 cm a from the fixed positive charge, a particle of mass 5.70 g and charge +3.70 C is released from rest.
A nut is held in the jaws of a pair of pliers. The nut is 25 mm from the pivot of the pliers and a force of 10 N is applied to each handle 150 mm from the pivot
In a purely iductive AC circuit L=25.0mH and the rms voltage is 150V. Calculate the inductive reactance, max and rms current in the circuit
When a mass is suspended from a spring, the equilibrium length is increased by 50mm. Find the period and amplitude of the resulting oscillations
The pressure in a traveling sound wave is given by the following equation. p = (2.1 Pa) sin ?[(1.40 m-1)x - (280 s-1)t], Find the pressure amplitude and Find the wavelength
The head of a hammer with a mass of 1.5kg is allowed to fall onto a nail from a height of 0.70m, What is the maximum amount of work it could do on the nail
The power required by an ice maker is 225 W and is the rate at which it does work. The ice maker operates like a refrigerator or an air conditioner and has a coefficient of performance of 3.60.
Susan's 12.0kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30? above the floor. Use work and energy to find Paul's speed after being pulled 3.20m
The vector is 3.5 long and is directed into this page. Vector points from the lower-right corner of this page to the upper-left corner of this page and has components -19.5, 25.
What average force is required to stop an 1100-kg car in 8.0 seconds if the car is traveling at 95 km/h
Two blocks of weights 70.0 and 100.0 N are connected by as massless string and slide down an inclined plane making an angle of 42.0 deg. find the magnitude of the heavier block's acceleration
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