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A 500 gram model rocket is on a cart that is rolling to the right at a speed of 3.0 m/s. The rocket engine, when it is fired, exerts an 8.0 Newton thrust on the rocket. Your goal is to have the rocket pass through a small horizontal hoop that is 20 meter above the launch point.
Find at what horizontal distance left of the loop should you launch?
Investigators are researching the appearance of a strange movement of objects in what the local community considers a haunted house. how strong was the magnetic field that produced this EMF
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass, how fast is the person running
A bowling ball weighing 71.2 is attached to the ceiling by a 3.80 rope. The ball is pulled to one side and released; it then swings back and forth like a pendulum. As the rope swings through its lowest point, the speed of the bowling ball is measured..
A student drops two metallic objects into a 120 g steel container holding 150 g of water at 25°C. What is the mass of the aluminum chunk
A 15.0 kg box is released ona 36.0° incline and acceleratesdown the incline at 0.271 m/s2. What is the coefficient ofkinetic friction
Five vectors of equal magnitude 190mm, make angles26o, -26o, 41o,-41o,and 90o with respect to the x-axis. What is the length in (mm) of the sum of these vectors?
A horizontal force of 150 N is used to push a 45.0 kg packing crate a distance of 5.10 m on a rough horizontal surface. If the crate moves at constant speed, find each of the following. (a) the work done by the 150 N force _________J (b) the coeffici..
A gas at 23°C and atmospheric pressure fills a cylinder. The gas is transferred to a new cylinder by four times the volume, after which the pressure is a quarter the original pressure. What is the new temperature of the gas?
Sound travels at a speed of about 344 m/s in air. You see a distant flash of lighting and hear the thunder arrive 7.6 seconds later. How many miles away was the lighting strike
A car moves in a circle with constant speed. The tires do not slip on the road. What is the direction of the friction force on the tires by the road
An excavation crew digs a hole in the ground measuring 60 yd x 50yd x 8 yd to facilitate a basement for an office building. Five dump trucks, each with a capacity of 20 yd3, are utilized to haul the material away. How many trips should each truck mak..
The work function for iron is 4.50 eV. Find the cutoff wavelength for iron and What is the lowest frequency of light incident on iron that releases photoelectrons from its surface
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