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A 0.145 kilogram baseball pitched horizontally at 30.8 m/s strikes a bat and is popped straight up to a height of 55.9 meter. If the contact time is 1.60 milliseconds, find the magnitude of the average force on ball during contact.
Find the direction of the average force on the ball during contact.
An elevator cable winds on a drum of radius 80.0 cm that is connected to a motor. If the elevator moves down8.0m, how many revolutions has the drum made
Three air carts have masses, 4m,2m and m. the most massive cart hasan initial speed of Vo; the other two carts are at restinitially. All carts are equipped with spring bumpers that giveelastic collisions.
A point charge of 8.40 mC is surrounded by an equipotential surface with a radius of 0.262 m. What is the electric potential on the surface
Three moles of an ideal monatomic gas expands at a constant pressure of 2.60 atm, Calculate the amount of heat added to the gas
A transformer on a pole near a factory steps the voltage down from3600 V (rms) to 120 V (rms). The transformer is to deliver1600 kW to the factory at 92% efficiency.
A cylinder of radius a = 9.4 cm and height h = 9.5 cm is aligned with its axis along the y-axis as shown. What is the total flux ? that passes through the cylindrical surface? Enter a positive number if the net flux leaves the cylinder and a negat..
a platinum resistance thermometer has resistances of 220.0 when placed in a 0degc ice bath and 262.8 when immersed in a
your refrigerator has a mass of 112.9 kg including the food in it. it is standing in the middle of your kitchen and you
A small piece of dust of mass m = 2.5 µg travels through an electric aircleaner in which the electric field is 447 N/C. The electric force on the dust particleis equal to the weight of the particle. What is the charge on the dustparticle?
A grinding wheel in the shape of a solid disk is 0.300m in diameter and has a mass of 2.50kg . The wheel is rotating at 2100rpm about an axis through its center. A) What is its kinetic energy? B) How far would it have to drop in free fall to acquire ..
An apartment has a living room whose dimensions are 2.9 m x 4.9 m x 6.0 m. what is the mass (in grams) of the air
A 0.2kg marble is launched off the end of a table and can be considered to be in free fall. The initial speed of the marble (Vi) is 2m/s. find the force that the floor exerts on the marble
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