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A tetherball leans against the smooth, frictionless post to which it is attached. (See the figure) The string is attached to the ball such that a line along the string passes through the center of the ball. The string is 1.30 long and the ball has a radius of 0.150 with mass 0.410
a. What is the tension in the rope?
b. What is the force the pole exerts on the ball?
A molecule of DNA (deoxyribonucleic acid) is 2.05 µm long. The ends of the molecule become singly ionized: Determine the effective spring constant of the molecule
A ten pound car wheel has a moment of inertia of 0.38 kg m2. What is the wheel's rotational kinetic energy
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
In an action-adventure film, the hero is supposed to throw a grenade from his car, which is going 94.0 km/h, to his enemy's car, which is going 112 km/h. Find the magnitude of the velocity relative to the earth
At the bottom, it strikes a block of mass M=2m which is at rest on the horizontal surface. Assume that the transition at the bottom is smooth, determine the speeds of the two blocks after the collision
An arteriole has a length of 1.25 mm and a radius of 21.9 ?m. The blood pressure drop along the arteriole is 1310 Pa. Calculate the resistance of the arteriole
A train is en route from Chicago to New York at 110km/h when the engineer spots a cow on the track. How far was the train from the cow when the engineer first applied the brakes
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 40.0m/s , Find the vertical component of the average force on the ball
Two point charges are fixed to rectangular coordinate system, Charges of q1 = 3.5uC and q2 = -15 uChave coordinates (0.55,0) and (0,0) in meters respectively
A circuit with 2 capacitors, C1 = 22.0 ?F and C2 = 16.0 ?F, are hooked up in parallel to each other, Calculate how much energy each capacitor can store
A 200g ball on a 70-cm-long string is swung in a vertical circle about a point 200 cm above the floor. What was the tension in the string an instant before it broke
Put a 10 V battery with a 10 ? internal resistance in series with a switch: hook this up to a 100 ? resistor in parallel with a 2 H inductor. Find the initial voltage across the inductor when the switch is opened
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