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Q1. A 9300 kg boxcar travelling at 23 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 15 m/s. What is the mass of the second car?
Q2. A bullet is fired horizontally with an initial velocity of 743 m/s at a target located 165 m from the rifle.
How much time is required for the bullet to reach the target?
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530, what is the angle of refraction for each wavelength
Mary and her younger brother Alex decide to ride the carousel at the State Fair. What is Mary's angular speed %u03C9M and tangential speed vM
A hydrogen atom has a radius of about 0.05 nm. estimate the electron's kinetic energy in three dimensions.
A Carnot engine takes an amount of heat QH = 111 J from a high-temperature reservoir at temperature TH = 1030 °C, Find the amount of work that is obtained from this process
A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, What was the bear's average velocity
Two inductors L1 = 1.17 H and L2 = 2.13 H are connected in parallel and separated by a large distance so that the magnetic field of one cannot affect the other, Calculate the equivalent inductance.
Two freight cars, each with a mass of 2.4 multiplied by 105 kg, collide and stick together. One was at first moving at 3.4 m/s and the other was at rest. What is their final speed.
With two fingers, you hold an ice cream cone motionless upside down the mass of the cone is m, and the coefficient of static friction between your fingers and the cone is? When viewed from the side, the angle of the tip is 2?
A car drives on a road which begins flat, then goes up and over the top of a hill and then goes down into a dip and back up to level ground.
how long does it take to reach the new equilibrium position.
A thermos contains 165 cm3 of coffee at 85° C. To cool the coffee, you drop two 14-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of coffee? Treat the coffee as if it were water.
Large meteors can impact the earth with speeds of 80,000 km/h. If such a meteor were to impact at a point on the plane of Earth's equator, calculate the mass of the meteor
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