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A blue ball is thrown upward with an initial speed of 22.2 m/s, from a height of 0.6 meters above the ground. 2.7 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 6 m/s from a height of 26.7 meters above the ground. The force of gravity due to the earth results in the balls each is having a constant downward acceleration of 9.81 m/s2.
How long after the blue ball is thrown are the two balls in the air at the same height?
A -6.00-µC charge is moving with a speed of 6.40 104 m/s parallel to a very long, straight wire. Find the magnitude and direction of the force on the charge
An airplane takes off at sea level and climbs to a height of 480 m. Estimate the net outward force on a passenger's eardrum assuming the density of air is approximately constant
Two plates of area 30.0 cm2 are separated by a distance of 0.0150 cm. calculate the potential difference (voltage) between the two plates
A capacitor with air between its plates is charged to 100 V and then disconnected from the battery. When apiece of glass is placed between the plates, the voltage across thecapacitor drops to 30 V.
The average density of the planet Mercury is 5510 kg/m3. The acceleration of gravity on its surface is 3.73 m/s2. Calculate the average radius of Mercury
If a woman lifts a 20.0 kg bucket from a well and does 6.00 kJ of work, how deep is the well? Suppose that the speed of the bucket remains constant as it is lifted.
An electron and a anti-electron (Positron) circle eachother at a distance of 1.00x10^-19m. What is the electrostatic force between the particles? What is the potential energy of the system? Is this energy positive or negative?
If half the potential energy of this water were converted into electric energy, explain how much electric power would be produced by these falls?
Air of room temperature was in a cylinder and sealed (cylinder is closed). Then, compression of 800kJ work was applied on the cylinder. Determine the amount of heat released from the cylinder to outside
Two point charges, +5.0 µC and ?2.0 µC, are separated by 4.0 m. What is the electric potential energy
Find the magnetic energy stored in the air gap between two very large magnetic pole pieces, one North, one South, each with an area of 100 cm2. Assume the 0.05 T magnetic field is uniform within the 2-cm gap.
Some rearview mirrors produce images of vehicles behind you that are smaller than they would be if the mirror were flat. Compute what is the mirrors radius of curvature
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