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Two automobiles are equipped with the same single frequency horn. When one is at rest and the other is moving toward the first at 15 m/s the driver at rest hears a beat frequency of 5.5 Hz. What is the frequency the horns emit?
(Hz)
A boy throws up a ball 15m/s, how high will the ball go and what is the duration (total time) in the air from throw to catch
Four charges are placed at the vertices of a square, centered at the origin. If each side of the square has a length of 0.224 m, what is the strength and direction of net electric field at the origin? Express your answer in terms of the charge ma..
A car with good tires on a dry road can decelerate at about 5.0 m/s2 when braking. Suppose a car is initially traveling at 55 mi/h. (a.) How much time does it take the car to stop.
You are to drive to an interview in another town, at a distance of 200 km along a straight road from your home.The interview is at 9:15 A.M. Calculate your average speed for the entire trip
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 290 m/s. Find the emf induced between the plane's wing tips
A hollow sphere of radius 0.30 m, with rotational inertia I = 0.098 kg m2 about a line through its center of mass, How much of this initial kinetic energy is rotational
A surgeon is attempting to correct a detached retina by using a pulsed laser. If the pulses last for 36.0 ms, how many photons are present in each pulse
a standing wave is in a open-end tube as shown. the tube legth is L = 1.80m. determine the wavelength of the standing wave
Old MacDonald had a farm, and on that farm he had a gate (see below). The gate is 3m wide and 1.8m high, with hinges attached to the top and bottom. The guy wire makes an angle of 300 with the top of the gate and is tightened by a turn buckle to a..
How fast must the bat fly, v_b, to hear a beat frequency of 205 rm {Hz}.
What is the gravitational force between two 20-kg iron balls separated by a distance of .9 m? What is the height of the table
ow does this change in amplitude affect the wave's frequency.
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