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A toy rocket starts at rest, and is fired vertically. The fuel burns for tine t1 = 15.7 s, and the rocket rises with a constant net upward acceleration of magnitude a1 = 7.23 m/s2. Once the fuel is exhausted, the rocket continues to rise (in free fall) until it reaches a maximum height, and then it falls back to Earth. Find:
the maximum height the rocket reaches: h =
the total time the rocket is in the air (from takeoff to when it crashes into the ground): ttot = s
A ball is dropped from rest from the top of a 6.35-m-tall building, falls straight downward, collides in-elastically with the ground, How many bounces can the ball make and still reach a windowsill that is 2.26 m above the ground
A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.30 T. The field is then adjusted so that an electron will follow a circular path of the similar radius when it is projected perpendicularly into the field with t..
An ideal gas is in contact with a heat reservoir to that it remains at a constant temperature of 300.0 K. How much heat flows between the gas and the heat reservoir
On a nice winter day at the South Pole, the temperature rises to ?63°F. What is the approximate temperature in degrees Celsius
A 1225 kg automobile starts from rest on a horizontal road and gains a speed of 83 km/h in 38 s. What is the average power required of the car during the 38 s interval
Two capacitors C1 = 3.2 ?F, C2 = 13.5 ?F are charged individually to V1 = 19.0 V, V2 = 5.6 V. Calculate the final potential difference across the plates of the capacitors once they are connected
A spelunker is surveying a cave. She follows a passage that takes her a distance 175 m straight west, Use the method of components to determine the magnitude of the fourth displacement
A car in stop-and-go traffic starts at rest, moves forward 19 in 8.0 , then comes to rest again. The velocity-versus-time plot for this car is given in the figure. What distance does the car cover in the first 4.0 seconds of it motion?
What is the smallest thickness of a soap film that would appear black if illuminated with 470 nm light? Assume there is air on both sides of the soap film
Red light of wavelength 633nm from a helium-neon laser passes through a slit 0.360mm wide. What is the width of the first bright fringe on either side of the central one
A flying wedge spaceship is a right triangle in side view. At rest, the base and height (which form the 90° angle) measure 8.9 m, calculate the angle of the triangular nose to be
To test the deflection of the uniform 200-lb beam the 121-lb boy exerts a pull of 36 lb on the rope rigged. Calculate the force supported by the pin at the hinge O.
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