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If a mass is hung from a spring (whose spring constant is 2 pounds per foot) stretches the spring 0.4 meters (m),
a) What is the force on the spring in Newtons (N)?,
b) What is the weight of the mass in pounds?,
c) How many grams is the suspended mass?
External forces compress 21 mol of ideal monatomic gas; during the process the gas transfers 15 kJ of heat to its surroundings, How much work was done on the gas
explain the electric flux through the surface of the cube. Calculate the volume charge density of the atmosphere, assuming it to be uniform between 270 and 420 m.
An automobile has a mass of 1600 kg and a velocity of 22.2 m/s. It makes a rear-end collision with a stationary car whose mass is 2310 kg. Find the impulse that acts on the skidding cars from just after the collision until they come to a halt
A sound source emits sounds of frequency 205 Hz that travel through still air at 340 m/s. The listener moves at 90 m/s relative to the still air away from the stationary source. Find the frequency heard by the listener.
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 65.3°. Find the dispersion of the slab
Light from a laser beam with a wavelength of 600 nm passes through a narrow single slit and observed on a screen 1.5 m behind the slit. How wide is the slit
The electron beam inside a television picture tube is 0.4 mm in diameter and carries a current of 55 µA. What is the power delivered to the screen by the electron beam
A block is given an initial velocity of 5 m/s up a frictionless 19° incline. How far up the incline does the block slide before coming (momentarily) to rest.
Weak magnetic fields can be measured at the surface of the brain. Although the currents causing these fields are quite complicated, we can estimate their size by modeling them as a current loop around the equator of a 18--diameter (the width of a ..
convert normal blood pressure readings of 120 over 80 mm hg to newtons per meter squared using the relationship for
A certain lightbulb is rated at 175.0 W when operating at an rms voltage of 120 V. What is the peak voltage applied across the bulb
A weightlifter lifts 200kg from the floor to a height of 2m in 2s. How much work did the weightlifter perform
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