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In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that shown in the figure below and has a range of 28 m. Suppose the launch speed is doubled, and the projectile is fired at the same angle above the ground. What is the new range?
Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 237.5m/s, Find the distance between the tanks when the round was first fired
What is the relationship between a vector and a coordinate system? Between a vector and the number line? What properties or values of a vector depend on the coordinate system used to express it?
On a summer day, the air conditioning breaks down and the air in your classroom becomes very warm and muggy with a vapour pressure of 20 hPa and a temperature of 25o C.
A light ray travels through medium #1 and crosses a boundary into water at an indicent angle of 21.8 degrees. what is the energy of one photon of this light
A 68 kg person sits on a 4.0 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.2 cm in diameter . Find the pressure exerted on the floor by each leg of the chair, assume the weight is evenly distributed.
A light rail commuter train draws 635 A of 520 V DC electricity when accelerating. What is its power consumption rate in kilowatts
A power station delivers 510 kW of power at 12,000 V to a factory through wires with total resistance 3.5 . How much less power is wasted
X-rays with a wavelength of 0.0350 nm undergo Compton scattering from a carbon target. Find the magnitude of the momentum of a scattered electron
A person runs a marathon in 2 hours, 15 minutes and 56 minutes. the marathon distance is 20 yards, 385 yards. What is the average speed in miles per hour?
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. How many revolutions per minute is the sample making
The masses of Chuck and Jackie are both m1. Chuck then picks up a motionless ball of mass m2, In the end, what is Jackie's speed with respect to Chuck
A 250 g piece of lead is heated to 300 Celsius and placed into a beaker containing 500 ml of water. How much heat energy is passed from the lead to the water
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