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Q1. In an American football game, an 89.3 kg fullback running east with a speed of 5.09 m/s is tackled by a 95.8 kg opponent running north with a speed of 3.01 m/s.
If the collision is perfectly inelastic, calculate the speed and direction of the players just after the tackle.
Q2. 26 g of copper pellets are removed from a 300 degree Celsius oven and straight away dropped into 116 mL of water at 25 degree Celsius in an insulated cup. What will the new water temperature be?
What is the lift (in newtons) by reason of Bernoulli's principle on a wing of area 77 m^2 if the air passes over the top and bottom surfaces at speeds of 270 m/s and 140 m/s, correspondingly.
What is the velocity of each ball after the elastic collision? What will be the highest height of each ball after the elastic collision .
Write down an expression for the efficiency of the air cart bumper in terms of the initial and final kinetic energy of the cart. What defines a collision as elastic or inelastic.
a car with a mass 1865 kg is travelling west and slows down uniformly to 8.5 m/s over a distance of 108 m. calculate the initial speed of the car if the required braking force is 7525 N
What is tension in each string
What is size of the gravitational force on the moon
Compute the magnetic flux
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
A heavy piece of hanging sculpture is suspended by a 146.0 cm long, 8.03 gm wire. When the wind blows hard, wire hums at its fundamental frequency of 113.0 Hz. What is the mass of the sculpture (in kg) assume that the local acceleration due to gravit..
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
A 220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.50 J.
What is magnitude of induced emf between the ends of beam
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