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A model of a golf ball is to be studied to determine the effects of the dimples. A sphere 10 times larger than an actual golf ball is used in the wind tunnel study. What speed should be selected for the model to simulate a prototype speed of 50 m=s?
The picture tube in an old black-and-white television uses magnetic deflection coils rather than electric deflection plates. what field magnitude is necessary to deflect the beam to the side of the screen
A cruise ship sails 150 km east, then 250 km northwest, and then 100 km at 30° east of south, Find the magnitude and the direction of the last leg of the journey
A piece of machinery with a momentum of inertia of 2.6 kg m2 rotates with a constant angular speed of 4.0radians/second when a frictional torque of 0.56 mN acts on it. What is the net torque acting on the piece
A service station charges a battery using a current of 6.6A for 4.0h, How much charge passes through the battery
Two parallel wires spaced a distance d apart experience an attractive force per unit length of 1.00e-4 N/m. what is the distance d
An elastic (head-on) collision occurs between two objects. Object one has a mass of 23.9 kilogram and is initially moving to the right with a speed of 3.97 m/s. Find the magnitude and direction of velocity of object one after the collision
a soccer ball is kicked with an initial horizontal speed of 5 m/s and an initial vertical speed of 3m/s. find the ball's verical speed at the apex of the flight
a 7.00 kg ball falls from a 2.00m shelf. Just as it hits the floor, what is its kinetic energy when it hits the floor
If a 0.20 kg ball falling with a velocity of 3.0 m/s makes a perfectly elastic collision with the floor, how much impulse will the floor place on the ball during the collision
How far would you have to drill into the Earth, to reach a point where your weight is reduced by 6.5%? Approximate the Earth as a uniform sphere
A glass is half-full of water, with a layer of oil(n = 1.51) floating on top. A ray of light traveling downward through the oil is incident on the water at an angle of 72.9°. Take the refraction index of water to be1.333.
A space traveller whose mass is 104kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no near planetary objects.
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