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The driver of a 1350 kg car, initially traveling at 12.1 m/s, applies the brakes, bringing the car to rest in a distance of 19.5 m.
(a) Find the net work done on the car.
(b) Find the magnitude and direction of the force that does this work. (Assume this force is constant.)
An aircraft weighing 902 N is accelerated at 10.8 m/s/s for 5 seconds, at which time the aircraft launches. What is the force required to launch the aircraft
This question requires two answers. The isotope 12N undergoes radioactive decay to form 12C. What charged particle is emitted in the decay process
A 0.6410-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water.
In an open RC circut, the total resistance is 15Kohms and the battery emf is 24 and constant is measured to be 35 microsecond calculate (a) the total capacitance of the circuit
A circuit contains six 290 lamps and a 18 heater connected in parallel. The voltage across the circuit is 120V. If the circuit has a 11A fuse, will the fuse melt if all the lamps and the heater are on.
A rocket is fired straight upward from rest with an acceleratrion of 5 m/s^2. It maintains acceleration until it is 1300 m above the ground, What is the Rocket's velocity, Find the total amound of time the rocket is in the air
An ideal gas has a pressure of 1.0 atm, a volume of 25.0 L at a temperature of 30 deg C. How many molecules are there in the gas
Two blocks rest on a horizontal frictionless surface. (top block weighs xkg, the bottom box weighs 10kg). what is the mass of the top box
Calculate the energy needed to accelerate a spaceship with a mass m = 25 × 103 kg toa speed of 0.40c. Compare this number with the approximate annual energy usage ofEarth, 1021 J
A solid disk of radius 1.60 m and mass 2.3 kg rolls without slipping to the bottom of an inclined plane. what is the height of the inclined plane
The average power dissipated in a 47-? resistor is 2.5 W. What is the peak value I0 of the ac current in the resistor
Two people, one of mass 75kg and the other of mass 60kg, sit in a rowboat of mass 80 kg. With the boat initially at rest, two people, who have been sitting at opposite ends of the boat 3.2 m apart from each other, now exchange seats. How far and i..
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