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Radar uses radio waves of a wavelength of 2.3m. The time interval for one radiation pulse is 100 times larger than the time of one oscillation; the time between pulses is 10 times larger than the time of one pulse. What is the shortest distance to an object that this radar can detect
A ping-pong ball covered with a conducting graphite coating has a mass of 5.40 x 10-3 kg and a charge of 9.50 µC. What electric field directed upward will exactly balance the weight of the ball
What is the maximum wavelength seen in each of the Lyman, Balmer, Paschen, and Brackett, and Pfund series for hydrogen? (122, 656, 1880, 4050, 7470 nm)?
A 5-kg fish swimming 1 m/s swallows an absentminded 1-kg fish swimming toward it at a speed that brings both fish to a halt immediately after lunch. What was the speed of the smaller fish
How long does it take for a golf ball to fall from rest for a distance of 11.2m
A bowling ball of mass 7.1 kg and radius 9.0 cm rolls without slippingdown a lane at 5.2 m/s. Calculate its total kinetic energy
A box of mass 29.7 kg slides down an inclined plane without friction. If the acceleration, a, of the box along the direction ofthe plane is 4.1 m/s2, what is the angle q (in degrees) of the plane with respect to the horizontal?
Chameleons use their tongues to catch their prey. Their tongues typically accelerate at 250 m/s2 for up to 20 milliseconds, determine how far does the tongue reach
If the parachutist comes to rest with constant acceleration over a distance of 0.710 m, illustrate what force does the ground exerts on her?
A generating station is producing 1.50 x 106 Watt of power that is to be sent to a town placed 5.0 kilometer away. Determine the power lost in heating the wires if the power is transmitted at 1100 V
A 10,000 Kg spaceship is traveling without power 500 m/s near an anomaly in space where the potential energy is U = -10-7r4 + 30 r2. how far from the anomaly can it get
a roller coaster has a vertical drop of 68.6m. the speed at the end of the drop is 35.6 ms. the car is at rest at the
After falling from rest from a height of 31 m, a 0.51-kg ball rebounds upward, reaching a height of 21 m. what average force was exerted on the ball
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