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Calculate the energy in joules of a photon of red light having a frequency of 4.0 × 1014 Hz.
What is the energy of one mole of these photons?
A small plane, having a mass of 3000 kg, is flying in air of density 1.0 kg/m^3. Air moves over the top and bottom surfaces of the wings at 160 m/s and 130 m/s, respectively. What is the net minimum wing area needed?
Scientists want to place a 3800.0 kg satellite in orbit around Mars. They plan to have the satellite orbit at a speed of 2462.0 m/s in a perfectly circular orbit. What is the acceleration of the satellite in orbit
Two moles of an ideal monatomic gas go through the cycleabc. For the complete cycle, 800 J of heat flows out of the gas.
A 44 gram particle undergoes simple harmonic motion with an amplitude. What is the period of the motion? What is the maximum speed? What is the total mechanical energy of motion?
Find what is the lift due to Bernoulli principle on a wing of area 66.6 m2 if the air passes over the top and bottom surfaces at speeds of 264 m/s and 163 m/s, correspondingly
The voltage supplied by a wall socket varies with time, reversing its polarity with a constant frequency, as shown in the graph. (Figure 1) What is the rms value Vrms of the voltage plotted in the graph? Express your answer in volts.
A subway train starts from rest at a statrion and accelerates at a rate of 1.65m/s^2 for 14.2s. Find the total distance covered
A powerful motorcycle can produce an acceleration of 3.00 m/s2 while traveling at 90.0 km/h. What force does the motorcycle exert backward on the ground
A mover has to move a heavy sofa of mass 143 kg to the second floor of the house. He uses a rope to pull the sofa up a ramp from the first to the second floor. find the tension in the rope
An electron moves west to east in the continental United States. Does the magnetic force experienced by the electron point in a direction that is generally north, south, east, west, upward, or downward? Explain.
It is observed that 4.2 min is required for the rotor to coast to rest from an angular velocity of 3600 rpm. Determine the average magnitude of the couple due to kinetic friction in the bearings of the motor.
A small sphere with mass 9.00 ?g and charge ?4.30?C is moving in a circular orbit around a stationary sphere that has charge +7.50?C. what is the radius of its orbit
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