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A 2.0-kg projectile moves from its initial position to a point that is displaced 20 m horizontally and 15 m above its initial position. How much work is done by the gravitational force on the projectile?
A wheel with radius 1.50 m is turning about a horizontal axis through its center (the plane of the wheel is vertical). The wheel starts from rest and undergoes constant angular acceleration in the counter clockwise direction. At the lowest point of i..
A boy and girl are balanced on a massless seesaw. The boy has amass of 75kg and the girl has a mass of 50kg. If the boy sits 2metres from the pivot on one side of the seesaw where must the girlsit on the oppsite side.
a ball of mass m and moment of inertia i bmr2 is held motionless on a plane of mass m and angle of inclination theta.
Which of the following actions is expected to increase the elastic modulus of a semicrystalline polymer? Select as many as appropriate. increasing the volume fraction of crystalline phase (vs amorphous phase) deformation by drawing (consider the el..
A toaster oven has a equivalent resistance of 10.5 ?. When pluged in a 120 V circuit, (Assume direct current) , What's the power of the oven
A proton (mass 1 u) moving at 5.40 *10^6m/s collides elastically and head-on with a second particle moving in the opposite direction at 2.60 106 m/s. Find the mass and final velocity of the second particle
Please answer all parts providing detailed explanations or complete calculations. A clear and well-drawn sketch please. A compelling demonstration of an optical surprise uses a curved mirror to project a real image of a lit bulb (upside down and hi..
A delivery man travels 34.0 m north, 23.0 m east, 12.0 m south, then takes an elevator 32.0 m up into a building. What is the magnitude of his displacement
An athlete swims the length of a 50.0-m pool in 20.0s and makes the return trip to the starting position in 22.0s. Determine her average velocities in
consider light that is refracted by a prism shaped like an equilateral triangle. the incident ray is parallel with the
nbspa proposed solar collector installation has a frontal area exposed to the sun of 50.0 m2 and combines a
A scuba diver 18 m below the surface of a lake breathes out, releasing bubbles into the water. How much do the bubbles expand on their way up
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