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1. How much mass of positron and electron we require to move the Earth off orbit.
2. Theoretically, how much oil do we need for that?
A motorcycle accelerates uniformly from rest and reaches a linear speed of 22.0 m/s in a time of 9.0 s. What is the angular acceleration of each tire
a 200 ohms resistor and a .4 H inductor are connected in series with a voltage source having amplitude of 30 v, what is the current amplitude
A laboratory technician drops a 0.0770-kg sample of unknown material, at a temperature of 100.0°C, into a calorimeter. The calorimeter can, initially at 23.0°C, is made of 0.150 kg of copper and contains 0.200 kg of water. The final temperature of th..
If you place an electric charge in an electric field it will feel a force due to the electric field, Describe the direction of the force
A wave pulse travels down a slinky. The mass of the slinky is m = 0.85 kg and is initially stretched to a length L = 6.2 m. compute the speed of the wave pulse
A 15.1 mass fastened to the end of a steel wire with an unstretched length of 0.650 is whirled in a vertical circle with angular velocity 2.00 at the bottom of the circle. The cross-sectional area of the wire is 1.20×10?2 . Calculate the elongatio..
The nuclear reaction that powers the sun is the fusion of four protons into a helium nucleus. How much energy is released in each fusion
You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above the ground. how high above the ground was the acorn before it fell
The human body converts internal chemical energy into work and heat at rates of 60 to 125 W (called the basal metabolic rate). This energy comes from food and is usually measured in kilocalories [1 kcal = 4.186 kJ].
You are riding in an elevator on the way to18th floor in your dormitory. The elevator is accelerating upward witha=1.90m/s2. Beside you is the box containing your new computer; boxand contents have a total mass of 28.0kg.
An object has a kinetic energy of 237 J and a momentum of magnitude 29.3 kg·m/s. Find the speed and the mass of the object
a spelunker enters a cave. consider the entrance to the cave the origin. the spelunker then moves east for 100 ft then
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