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It requires 78.73 J of work to lift a rock to a height of 4.03 m. What is the mass of the rock?
A toy cannon uses a spring to project a 5.24 g soft rubber ball. The spring is originally compressed by 4.96 cm and has a force steady of 8.03 N/m.
A single electron orbits a lithium nucleus that contains three protons (+3e). The radius of the orbit is 2.20 × 10-11 m. Determine the kinetic energy of the electron.
what is the volume of an iron atom. What is the ratio of the mass density of girder A to the mass density of girder B.
An electron is brought to a point 0.2m from the center of a conducting sphere of radius 0.1m carrying a charge of 4.0x10^-6 C, What is the force acting on the electron
Two cars are travelling on a dirt road between 3 consecutive poles after 5.40s they are side by side at next telephone pole. The distance between the poles is 66.30m.
A 2 kg ball is thrown straight up in the air. What is the net force acting on the ball when it reaches its maximum height?
The total volume of the column of water in the neck is 0.200 m^3. Illustrate what is the magnitude of the force exerted by the water on the bottom of the container?
Let all the three charges be placed at the center of a tetrahedron, composed of four triangular faces of equal area. Calculate the net flux through each surface
A river ?ows at a speed vr = 5.85 km/hr with respect to the shoreline. A boat needs to go perpendicular to the shoreline to reach a pier on the river's other side, determine the width of the river
A car of mass 960 travels at a speed of 30 along the straight road. The driver sees a red traffic light ahead, and applies brakes. The coefficient of friction between the car tyres and the road is 0.88. Take the acceleration due to gravity to be 9.80..
An airplane flies horizontally with speed 1000km/h(280m/s) an engine falls it takes 30s to gets to the ground. neglect air resistance elucidate the airplane is 4.5km high?.
The atmospheric pressure at sea level is about 1.0 multiplied by 105 Pa. What is the force at sea level that air exerts on the top of the typical office desk, 159cm long and 86 cm wide?
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