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Q. Suppose one speaker is driven at 578 Hz and the other at 561 Hz. What is the beat frequency in Hz? The average frequency in Hz?
Q. A 430 g block is at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.640, and the coefficient of kinetic friction is 0.300. A force of magnitude P pushes the block forward and downward as shown in the figure below. Assume the force is applied at an angle of 24.0° below the horizontal.
How many protons hit the target. How much energy is delivered to the target each second if the protons each have a kinetic energy of 30 MeV and lose all of their energy in the target.
Which vector has the largest x component and y component
A car entering a freeway ramp accelerates from 14 m/s to 25 m/s in 10 seconds. what is the cars average acceleration during this 10 seconds.
To estimate the muzzle speed of a blow dart, fire dart straight up into the air and time how long it takes to come back down. Roughly half of that time is the time for object to decelerate from its initial velocity to motionless. Estimation the in..
A 4 kg fish swimming 3 m/s swallows an absent minded 2 kg fish at rest. What is the speed of the large fish instantly after lunch.
Write three methods of increasing the volume of a balloon
A 116 kg chesterfield is pushed up a frictionless ramp at the constant speed by a delivery person. If the ramp is inclined at 25.80° to horizontal. What is the magnitude of the normal force that is exerted on the chesterfield by the ramp.
A student eats a candy bar that may give 1.8 * 10^6 joules of energy. if the student has a mass of 60 kg, how high will he have a climb a ladder to offset completely the energy contained in the candy bar.
An object weighing 307 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 270 N. Immersed in oil, the object weighs 282 N. compute the density of the object.
Two charged balls are 20.0 cm apart. They are moved, and force on each of them is tripled. How far apart are they now.
when the field is vertical to the plane of loop, when the field makes a 90.0 angle with the normal to plane.
A 17g rifle bullet travelling 220 m/s buries itself in a 3.90 kg pendulum hanging on a 3m long string, which makes the pendulum swing upward in an arc. Find out the vertical and horizontal components of the pendulum's displacement.
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