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Two telephone poles are separated by 40 m and connected by a wire. A bird of mass 0.50kg lands on the wire midway among the poles, causing the wire to sag 2.0 m below horizontal. Assuming the wire has negligible mass, what is the tension in the wire?
When a 58-g tennis ball is served, it accelerates from rest to aspeed of 39 m/s. The impact with theracket gives the ball a constant acceleration over a distance of 37 cm. What is the magnitude of the netforce acting on the ball?
four identical charged particles q 11.0 microc are located on the corners of a rectangle as shown in the figure below.
Determine the force (in N) of the car on truck all through the impact. Call this force positive if it points to the east, and negative if it points to the west.
an iron wire has a cross-sectional area of 1.01 x 10-5 m2. carry out steps a through e to compute the drift speed of
A 12kg runaway grocery cart runs into a spring with spring constant 210 N/m and compresses it by 70 cm .What was the speed of the cart just before it hit the spring.
The plot below shows the acceleration of a mouse in a long, straight burrow as a function of time; the velocity and the x-coordinate of the mouse at time t=0 are both zero. find the velocity of the mouse at time t=2s
A subway train starts from rest at a station and accelerates at a rate of 1.56m/s2 for 13.7s, Find the total distance covered
A speaker at the front of a room and an identical speaker atthe rear of the room are being driven at 421 Hz by the same sound source. How many beats does the student hear per second
A tuning fork vibrates at a frequency of 520 Hz. An out-of-tune piano string vibrates at528 Hz. How much time separates successive beats
If the bunting support rope is at 30 degree to the vertical and its tension force is 400N, what is the vertical component of the tension, and what is the horizontal pull from the bunting
From a cliff that is 9.4 m above a lake, a young woman (mass 44 kg) jumps from rest, straight down into the water. At the instant she strikes the water, what is her de Broglie wavelength.
The electric field between the plates of a parallel plate capacitor is horizontal, uniform, and has a magnitude of 3.5*10^4 N/C. What is the angle made by the thread with the vertical axis
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