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A .003 kg lead bullet travels at a speed of 240 m/s and hits a wooden post. If half the heat energy generated remains with the bullet, what is the increase in temperature of the embedded bullet?
A woman walks 255 m in the direction 30° east of north, then 190 m directly east. (a) Find the magnitude. (b) Find the angle of her displacement from the starting point (c) Find the distance she
The car accelerates at 0.2 m/s2. What is the acceleration of the truck? What is the magnitude of the force exerted on the car?
The radius of a solid sphere is measured to be (6.680+/-0.24) cm, and its mass is measured to be (1.970+/-0.019) kg. Calculate the density of the sphere in kilograms per cubic meter.
What is the magnitude of the acceleration of an electron that is 1.0 cm from the center of the bead?
Find the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed. Express your answer using two significant figures.
A 151 kg rocket moving radially outward from Earth has a speed of 5.03 km/s when its engine shuts off 223 km above Earth's surface. (a) Assuming negligible air drag, find the rocket's kinetic energ
What is the final temperature of the system, assuming no heat is exchanged with the surroundings? The specific heat of water is 4186 J/(kg x K).
Consider a convergent lens with a focal length f. An object is placed at a distance p=3/2 f. to the left of the lens.now place a convergent lens with a same focal length at a distance d=f behind the
A hydrogen atom has a diameter of approximately 1.07×10-10 m, as defined by the diameter of the spherical electron cloud around the nucleus. The hydrogen nucleus has a diameter of approximate
A 0.400 kg object is swung in a vertical circular path on a string 0.460 m long. If its speed is 3.50 m/s at the top of the circle, what is its speed when it reaches the bottom of the circle ??
The horizontal, a worker exerts a force of 369 N parallel to the incline. The crate moves a distance of 4.00 m. What work is done on the crate by the worker?
A tennis ball is thrown toward a vertical wall with a speed of 21.0 m/s at an angle of 40.0° above the horizontal. The horizontal distance between the wall and the point where the tennis ball is
An 82 kg parachutist descends through a vertical height of 350 m with constant speed. Find the increase in entropy produced by the parachutist, assuming the air temperature is 21 degrees C.
Weight, Normal, Friction: During a freeway safety review, you are studying a piece of one road with a curve that is essentially 1/8 of a circle with a radius of 0.5 miles.
Cells of this kind are called rods and have a diameter of approximately 0.0020mm. What is the intensity (in W/m^2) delivered to a rod?
A cube of ice is taken from the freezer at -9.3°C and placed in a 97 g aluminum calorimeter filled with 292 g of water at room temperature of 20°C. The final situation is observed to be all
The cockroach finds a bread crumb on the rim and, of course, stops. What is the angular speed of the lazy Susan after the cockroach stops?
The plane rises with constant velocity in the vertical direction while continuing to accelerate in the horizontal direction. (a) What is the weight of the plane?
Two speakers, one directly behind the other, are each generating a 245 Hz sound wave. What is the smallest separation distance between the speakers that will produce destructive interference at a l
A very long, tightly wound solenoid has a circular cross section of radius 2 cm. At t = 2 s, what is the magnitude of the current in the 7-turn loop?
If the coefficient of kinetic friction between the road and the tires on a rainy day is 0.120, what is the minimum distance needed for the car to stop?
Compute the total mechanical energy of the glider at any point in its motion.
Assuming the acceleration is constant during each time interval (but not necessarily the same in both intervals), what distance does the shuttle travel during the first 8.00s ?
At the point of fission, a nucleus with 98 protons is divided into two smaller spheres, each with 49 protons and a radius of 7.4 10-15 m. What is the repulsive force pushing these two spheres apart