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A bat flies toward a wall at a speed of5.0m/s. As it flies, the bat emits an ultrasonic sound wave with frequency29.5kHz. What frequency does the bat hear in the reflected wave?
kHz
A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of defensive linemen. Find the magnitude and direction of his average acceleration
Explain what is the current in the cell during this period? Assume that the gold ions carry one elementary unit of positive charge.
A wave on a Slinky has a frequency of 1.69 Hz. It takes 4.1 s to travel the length of the Slinky (0.29 m). What is the wavelength.
A 2.00-kg package is released on a 53.1° incline, L = 3.93 m from a long spring with force constant 120 N/m, What is the maximum compression of the spring
26g of copper pellets are removed from a 300 C oven and immediately dropped into 110mL of water at 25 C in an insulated cup
A mechanic pushes a 2.8 multiplied by 103 kg car from rest to a speed of v, doing 5400 J of work in the process. During this time, the car moves 20.0 m. find the horizontal force exerted on the car
q1. a toyota prius driving north at 59.0 and the vw passat driving south at 37.0 are on the same road heading toward
What is the upward force that Olivia applies to the handles in order to hold the wheelbarrow in that position.
An electric vehicle starts from rest and accelerates at a rate of 2 m/s2 in a straight line until it reaches a speed of 25.00 m/s. The vehicle then slows at a constant rate of 1.1 m/s2 until it stops. (1) How much time elapses from start to stop? ..
A 18 liter tank of helium is at a pressure of 192 kPa at a temperature of 0 C. A.) How many moles of helium are there in the tank? B.) If the volume of the tank expands to twice its initial volume at constant pressure, what is the new temperature?..
a skier of mass 100 kg, starts from rest as the top of a frictionless incline of height 20 m, how far does she travel on the horizontal surface before coming to rest
An 80 kg person climbs a set of stairs that are 5 meters high. How much gravitational potential energy does she gain
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