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The magnitude of vector A is 24 m, and it points in the positive y direction. Vector B is added to A and the sum A + B points in the negative y direction with a magnitude of 12 m. What are the magnitude and direction of vector B?
A 30.0g ball of clay traveling east at 1.00m/scollides and sticks together with a 30.0g ball of clay traveling north at 6.00m/s
The loaded cab of an elevator has a mass of 3000kg and moves 216-m up the shaft in 23s at constant speed. At what average rate does the force from the cable do work on cab.
A positively charged light metal ball is suspended between two oppositely charged metal plates on an insulating thread as shown below. After being charged once, plates are disconnected from the battery. define the behavior of the ball.
Find out the angular velocity at the beginning of the 4.60 interval; the angular acceleration of the flywheel.
Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.3m behind the grating. Three bright fringes are seen on both sides of central maximum.
After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 44.0. He finally comes to rest 22.0 below the level of the bridge. Illustrate what is the spring stiffness constant?
A motorcycle daredevil plans to ride up a 2.50m high 25.0° ramp, sail across a 10-m-wide pool filled with hungry crocodiles, and land at ground level on the other side.
An 80 kg spacewalking astronaut pushes off a 640 kg satellite, exerting the 100N force for the 0.50 s it takes him to straighten his arms.
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
A worker stands still on a roof sloped at an angle of 23° above the horizontal. He is prevented from slipping by a static frictional force of 540 N. Find out the mass of the worker.
You wish to create an image that is 15 meters from an object. This image is to be inverted and four times the height of the object. What type of image is created, real or virtual
A 85-tonne (1 t = 1000 kg) spacecraft moving in the + x-direction at 0.38m/s docks with a 70-tonne craft moving in the -x-direction at 0.62m/s
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