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a spring has an equilibrium length of 17 cm and a spring constant of 59.9 N/m. the spring is connected to the underside of the roof of a car and a 0.294 kg block suspended from it. how long (in cm) is the spring when the car is at rest? How long is the spring if the car is accelerating horizontally at 1.53 m/s^2?
A fifteen-watt heater is used to heat a monatomic ideal gas at a constant pressure of 6.61 x 105 Pa. How long was the heater on
Find (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with respect to due east). Find out the (c) magnitude and (d) direction of B - A. (Give the direction as a positive angle with respect to due west).
The take-up reel of a cassette tape has an average radius of 1.4 cm. Find the length of tape (in meters) that passes around the reel in 38 s
A student begins at rest and then walks north with an average speed of v1=0.85 m/s. What was the student's overall average velocity, in m/s, for the trip assuming the student spent equal times at speeds v1 and v2
lady ate a whole medium size pizza storing up 120 food Calories. This energy is used to heat up 2 liters of water from a certain initial temperature to a final temperature of 80 deg.C, what was the initial temperature of the water?
A copper block is removed from a 306?C oven and dropped into 1.00kg of water at 20.1?C. What is the mass of the copper block
A 70 kg bicyclist rides his 7.8 kg bicycle with a speed of 16 m/s. How much work must be done by the brakes to bring the bike and rider to a stop.
A firecracker in a coconut blows the coconut into three pieces. Two pieces of equal mass fly off south and west, What is the speed of the third piece
A stone is tied to a string (length = 0.727 m) and whirled in a circle at the same constant speed in two different ways. Determine the speed of the stone
A ray of light has an incident angle of 30.1 on a block of quartz and an angle of refraction of 20.4. what is the index of refraction for this block of quartz
At the end of the run, she is 175 m away from the starting point at an angle of 15.0° north of west. Illustrate what were the direction and length of her second displacement? Use graphical techniques.
During a workout, the football players at Rutgers State University ran up the stadium stairs at a steady pace in 58 s. estimate the average power output on the way up
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