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Q. A 11.5 m long conveyor belt, inclined at 30.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has a mass of 1.0 kg, and there are 23 newspapers per bundle. Determine the power that the conveyor develops if it delivers 15 bundles per minute.
Q. A large wooden turntable in the shape of a flat disk has a radius of 2.00 {rm m} and a total mass of 120 {rm kg}. The turntable is initially rotating at 3.00 {rm rad}/{rm s} about a vertical axis through its center. Suddenly, a 70.0 {rm kg} parachutist makes a soft landing on the turntable at a point on its outer edge.
An open-pit coal mine consumes 96 hectares of land, down to the depth of 26 m, each year. What volume of earth, in cubic kilometres, is removed in this time.
A vertical electric field of magnitude 2.00 × 104 N/C exists above the Earth's surface on a day when a thunderstorm is brewing. A car with a rectangular size of 6.00 m by 3.00 m is traveling along a roadway sloping downward at 10.0°. find the elec..
Drag race tires in contact with an asphalt surface have an extremely high coefficient of static friction. Assuming a constant acceleration and no slipping of tires, estimation the coefficient of static friction needed for a drag racer to cover 1.0 km..
What is the stopping distance when the surface is dry and the coefficient of friction is 0.620.
A shopper pushes a cart 39 m south down one aisle and then turns 90.0° west and moves 22 m. He then makes another 90.0° turn and moves 14 m.
Valerie is able to do 1200 joules of work in 10seconds. Brett is able to do 5000 joules of work in 50 seconds. Who is more powerful.
Compute the horizontal distance
What is magnitude of the Coulomb force
A microscope with an eyepiece lens of focal length 1.90 cm and an objective lens of focal length 1.15 cm is used to examine a section of the brain of a sacrificed rat. The distance between the lenses of the instrument is 24.0 cm and final image is vi..
Driving in your car with a constant speed of 12 {rm m}/{rm s}, you encounter a bump in the road that has a circular cross-section. If the radius of curvature of the bump is 35 {rm m}, find out the apparent weight of a 69 person in your car as you ..
If the charge of the point charge in the figure were -2Q (instead of +Q), by what factor would the magnitude of the force on the point charge due to the dipole change.
How much energy was released in an explosion
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