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Two capacitors, of 3.2 and 4.8?F capacitance, are connected in parallel across a 300 V potential difference. Calculate the total energy stored in the capacitors.
A 320 kg rocket sled can be accelerated at a constant rate from rest to 1400 km/h in 2.0 s. What is the magnitude of the necessary net force.
The pilot of an aircraft wishes to fly due west in a 30.50 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 190km/h. What should its speed relative to the ground be.
What is the tension T2 in the left-hand cable slanted at an angle of θ2 with respect to the wall? Illustrate what is the angle θ2 which the left-hand cable makes with respect to the ceiling?
What is the value of g at the location of this satellite. Discover the altitude of the satellite in meters.
A) Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal? B) Which is more useful for storing heat, this metal or an equal weight of water? defin..
What are the velocities of the two people after the snowball is exchanged. What is the greatest kinetic energy of the electrons removed from the cathode by this light.
A uniform steel plate has an area of 0.905 m2. When subjected to a temperature difference between its sides, a heat current* of 22.5 kW is found to flow through it. What is the temperature gradient? What is the temperature difference when the plat..
What are angles of refraction
A 60kg pole vaulter running at 13m/s vaults over the bar. Her speed when she is above the bar is 0.7m/s. Neglect air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
A tennis ball rolls off the edge of a tabletop of height 0.850m above the floor and strikes the floor at a point a horizontal distance 1.80 m from the edge of the table. You can ignore air resistance. Find out the time of flight.
Consider a closed triangular box resting within a horizontal electric field of magnitude E = 7.40x10^4 N/C, below.
The latent heat of fusion
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