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An ore sample weighs 17.50 in air. When the sample is suspended by alight cord and totally immersed in water, the tension in the cord is11.20 Newton.
a. Find what is the volume of the sample?
b. Find what is the density of the sample?
Assume the wheel has a constant negative angular acceleration of magnitude 2.50 rad/s2. Explain through how many radians has the wheel turned during the interval found in (a) which is 4.98?
If an experiment were done with a bow and arrow, when shooting the arrow what motion would it make. A diagram would be helpful. What causes the arrow to move horizontal, and what causes the arrow to move vertical? And why do the 2 motions (horizontal..
A man is pushing a heavy box across the floor. The box weighs 95 lbs. The man is pushing forward on it with a force of 56 lbs. What is the resultant horizontal force on the box
Two 3.50g beads (point charges) are hanging on threads and repel each other after being equally charged. What is the charge on each bead
a fire hose exerts a force on the person holding it. this is because the water accelerates as it goes from the hose
A car starts at a point with polar coordinate (36 m, 0o) and travels around the circle to the point (36 m, 180o). What is the distance (arc length) traveled by the car
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively, find the friction force between the box and the surface
If the parachutist comes to rest with fix acceleration over a distance of 0.660 meter, find what force does the ground exerts on her
A uniform plate of height 1.020 m is cut in the form of a parabolic section. Find the distance from the rounded tip of the plate to the center of mass
A stationary motion detector sends sound waves of frequency0.135 MHz toward a truck approaching at a speed of 49.2 m/s. What is the frequency of the waves reflected back to the detector?
A 12 g bullet travelling at 420 m/s is fired into the middle an unlatched 32.0 kg door. The door in hinged on one end, is 1.20 m wide and has I = 1/3 Md2. The bullet hits the middle of the door. What is the angular speed of the door just after the bu..
A spring system consists of a stationary spring and a 100-gram mass attached to one end that slides along a horizontal frictionless surface, How much total energy is in the spring
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