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A hunter wishes to cross a river that is 2.3 km wide and flows with a speed of 5.0 km/h parallel to its banks. The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect
What is the formula for the acceleration a of the hanger in terms of the tension T, the hanger's mass m, and the acceleration of gravity g?
A 545 g ball swings in a vertical circle at the end of a 1.3 m-long string. When the ball is at the bottom of the circle, the tension in the string is 14 N. What is the speed of the ball at that po
A jetliner, traveling northward, is landing with a speed of 63.8 m/s. Once the jet touches down, it has 763 m of runway in which to reduce its speed to 11.2 m/s. Compute the average acceleration (ma
A stationary proton is accelerated through a potential difference of 83.5 kV. What speed did the proton acquire?
What is the boiling point of water and potassium nitrate, when mixed together?
A Ball Rolling Uphill. A bowling ball rolls without slipping up a ramp that slopes upward at an angle beta (B) to the horizontal. Treat the ball as a uniform, solid sphere, ignoring the finger hole
A cord of length 1.5 m is fixed at both ends. Its mass per unit length is 1.2 g/m and the tension is 12 N. What is the frequency of the fundamental oscillation?
Determine the binding energy (in Joules) of a Cobalt atom
What is the lift due to bernoulli's principle on a wing of area 80 m^ 2 if the air passes over the top and bottom sufaces at speeds of 340m/s and 290m/s, respectively?
The acceleration of a certain simple harmonic oscillator is given by a = -(15.8 m/s2) cos (2.51t). What is the amplitude of the simple harmonic motion?
Sketch the energy band diagram from gate of MOSFET through the channel to the substrate at points at points where Vgs>Vth and Vds=Vgs-Vth
When the building is unheated, the inside temperature falls to 0.0°C, and heat conduction ceases. However, the wall does emit radiant energy when its temperature is 0.0°C. The radiant energy
A dentist's drill starts from rest. After 3.20 s of constant angular acceleration, it turns at a rate of 2.46 104 rev/min. Find the drill's angular acceleration.
Four objects are held in position by massless rigid rods. the masses are: 10 kg, 1.21 kg, 1.61 kg, 25.65 kg. Determine the moment of inertia for through the origin at the center of the rectangular
Three equal point charges, each with charge 1.55 , are placed at the vertices of an equilateral triangle whose sides are of length 0.300 . What is the electric potential energy of the system? (Take
A 180-g disk sits on a horizontally rotating turntable.The turntable makes two revolution each second. The disk is located 16cm from the axis of rotation of the turntable. What is the frictional for
A satellite is in a circular orbit about the earth at a distance of one earth radius above the surface. what is the speed of the satellite?
Find the force necessary to start the crate moving (at a 21degree angle), given that the mass of the crate is 32kg and the coefficient of static friction between the crate and the floor is 0.54.
An 86Kg person stands on a uniform ladder 4.0m long, that weighs 70N. The floor is rough; hence, it exerts both a normal force, and a frictional force, on the ladder. The wall, on the other hand, i
The drawing shows three identical rods (A, B, and C) moving in different planes. A constant magnetic field of magnitude 0.45 T is directed along the +y axis. The length of each rod is L = 1.3 m, and
while john is traveling along an interstate highway, he notices a 160-mile marker as he passes through town. later john passes another mile marker, 115. a. what is the distance between town and john
What are the magnitude and direction of the electric field that will allow a proton to fall with an acceleration of 3.5 m/s2?
A violin string that is 50.0 cm long has a fundamental frequency of 440 Hz. What is the speed of the waves on this string?
An arrow is fired with a speed of 21.0 at a block of Styrofoam resting on a smooth surface. The arrow penetrates a certain distance into the block before coming to rest relative to it. During this p