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A 5.0--long ladder has mass 11.0 and is leaning against a frictionless wall, making a 66 angle with the horizontal. If the coefficient of friction between the ladder and ground is 0.42, what is the mass of the heaviest person who can safely ascend to the top of the ladder? (The center of mass of the ladder is at its center.)
You are on a bridge which is a height 30m above the water. You first drop a ball and then 1.5 seconds later throw a second ball down so that both balls hit the water at the same time.
The resistor is connected in series with total set of lightbulbs. What is the value of the resistance? What is the power loss in the resistor.
A circuit contains sic 60 W lamps with a resistance of 240 ohm each and a 10 ohm heater connected in parallel. The voltage across the circuit is 120 V. Find the current in the circuit.
A tsunami travelling across deep water can have the speed of 750 {rm km/h} and a wavelength of 360 km. what is the frequency.
Coefficient of kinetic friction between tires and road
Consider an experiment where a subject lands during two conditions from a height of 0.2 m. During the first landing condition, the subject lands 'stiffly' (e.g., very little knee flexion).
The other end is attaced to a 3 kg disk moving in uniform circular motion on the table, which stretches the spring by 1 cm. Note: Friction is negligibe. Illustrate what is the work done on the disk by the spring during one full circle?
An object weighing 338 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 302 N. Immersed in oil; object weighs 313 N. Calculate the density of the object.
slides 145m before coming to a halt. Illustrate what is the coefficient of friction between the skies and the snow?
An airplane is flying with the velocity of 82.0 at an angle of 22.0 above the horizontal. When the plane is a distance 111 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog..
At what distance from the ring's center is E maximum. How deep is the tank.
A child runs down a 10 degree hill and then suddenly jumps upward at a 17 degree angle above horizontal and lands 1.5 m down the hill as measured along the hill. what was the initial speed?
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