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A concrete cube, 0.5 meters on each side, is lowered beneath the surface of a lake. At what depth is the water around it exerting an inward force of 170000 newtons on each face of the cube?
A particle with charge q is at rest when a magnetic field is suddenly turned on. The field points in the z-direction. What is the direction of the net force acting on the charged particle?
Planet A has a radius of 750 km and an acceleration due to gravity of .47 m/s^2. What are the escape speed from its surface and the maximum height an object will rise being fired directly upward at
If the vehicle has a speed of 20.2 m/s at point A, what is the force exerted by the track on the car at this point?
A 100 g cube of ice at 0 degrees C is dropped into 1.3 kg of water that was originally at 82 degrees C. What is the final temperature of the water after after the ice melts? The latent heat of fusio
X-rays are scattered from a target at an angle of 15.2° with the direction of the incident beam. Find the wavelength shift of the scattered x-rays.
Responding to an alarm, an 88.4 kg fireman slides down a pole to the ground floor, 4.60 m below. The fireman starts at rest and lands with a speed of 5.74 m/s. What is the magnitude of the force exert
Calculate the length of hollow cable that would give the same resistance as 1 m of 12-gauge solid cable.
If the patient has no astigmatism and contact lenses are prescribed, what is the power of the lens to correct the patients vision?
A screen is placed49.0cm from a single slit, which is illuminated with light of wavelength 677nm. If the distance between the first and third minima in the diffraction pattern is3.10mm, what is the
Your radio is tuned to an FM station ( v = 95.4 MHz) and your radio receives a signal with amplitude A = 0.23m. Given the form y(x,t) = Asin(B) for the wave. What is the waves amplitude at t =
A ray of light traveling in air is incident on the surface of a block of clear ice (of index 1.309) at an angle of 24.7 ? with the normal. Part of the light is re?ected and part is refracted. Find t
You put 1kg of water at 1 degree Celsius together with 0.5kg of steam at 100 degrees Celsius, what will the final temperature be after the two reach equilibrium?
A bowling ball is released from rest and and rolls without slipping down an inclined plane at 18° to the horizontal. What is the speed (m/s) of its center of mass after it has rolled 2.5 m down
A rocket is projected upward from the earth's surface (r=r(e)) with an initial speed v(0) that carries it to a distance r=1.5 R(e) from the center of the earth. What is the launch speed v(0)?
If she stands up, thus raising the center of mass of the trapeze + performer system by 35.0 cm, what will be the new period of the system?
If a rocket moving in the same direction passes Judy, Punch sees the speed of the rocket to be 0.910 c. What is the speed of the rocket seen by Judy in terms of the speed of the light?
How much time is needed for the current to reach 75% of its eventual maximum value?
An automobile's wheels are locked as it slides to a stop from an initial speed of 30.0 m/s. If the coefficient of static friction is 0.300 and that of kinetic friction is 0.200 and the road is horiz
What is meant by clockwise and counterclockwise torques? If the sums of these torques on a rigid body are equal, what does this imply physically?
A person who weighs 705 N is riding a 98-N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 6.55 105 Pa, wh
Define the term linear mass density. Also, what is implied if it is assumed that the linear mass density of an object is constant?
Standing on the ground 2.7 m from the wall of a building, you want to throw a package from your 1.6 m shoulder level to someone in a second-floor window 4.1 m above the ground. At what angle should
A series RLC tuning circuit in a TV receiver resonates in the middle of this frequency range. The circuit uses a 16 pF capacitor. What is the value of the inductor?
In a conversion from military to peacetime use, a missile with a maximum horizontal range of 160 km is being adapted for studying the upper atmosphere. What is the maximum altitude it can achieve if