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A car is traveling at a steady 75 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.4 m/s^2.
How much time elapses before the motorcycle is moving as fast as the car?
How far is the motorcycle from the car when it reaches this speed?
you want to design an oval racetrack such that 3200 lb racecars can round the turns of radius 1000 ft at 104 mih
in a 10ft^2 room wiyh no window and no doors . The air in the room is 79% N(sub2) and 21% O(sub2). What is the weight of the air
1. A diamond has a mass of 56.6 g and the gold ring it is set in has a mass of 125.6 g. How many carbon atoms are there compared to gold atoms?
A 65 gice cube at 0°C is heated until 60g has become water at 100°C and 5.0 g has become steam at 100°C. How much energy was added to accomplish the transformation
At small airports, a wind sock (a tapered bag that pivots on a pole) acts as a wind vane and gives some indication of the wind speed. Explain its operation. What is a convection cycle, and what are the related effects near a large body of water su..
When a mass m is hung a spring the spring stretched 6.0cm. What is the period of vibration if it is then pulled down a little and released
while water changes temperature would temperature vs time graph be linear or nonlinear? assume you have a thermal
The desired output current is io = 20 mA at a load resistance varying from RL = 20 Ω to 500 Ω. The variation in output current should be kept within ± 3%. Determine the design specifications of the amplifier.
While exploring a cave, a spelunker starts at the entrance and moves the following distances: 75.0 m north, 285 m east, 180 m at an angle 30.0° north of east, and 150 m south. Find the resultant displacement from the cave entrance
two vehicles of equal mass at a 90 degree intersection. If the momentum of vehicle A is 1.20 x 10^5 kg km/h east and the momentum of vehicle is 8.50 x 10^4 kg km/h north, what is the resulting momentum of the final mass
A heat pump delivers 34.0 kW to heat a house. The outside temperature is -9.0°C and the inside temperature of the hot-air supply for the heating fan is44.0°C. What is the coefficient of performance of a Carnot heat pump operating among these temperat..
A bullet moving horizontally with a speed of 500 m/s strikes a sandbag and penetrates a distance of 10 cm. What is the average acceleration of the bullet while it is in the sand bag
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