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A bug is hanging onto the rim of a bicycle wheel for dear life as the bicycle rolls down the road at a speed of 5 m/s. The bug is 30 cm from the axis of the wheel. How fast, in m/s, is the bug moving relative to the ground when the rotation of the wheel has carried it around to its highest point above the ground?
A constant force is applied to an object, causing the object to accelerate at 10 m/s2. What will the acceleration be if the force is halved? What will the acceleration be if the object's mass is halved?
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. The speakers are 28.2 m apart and the total power of the sound coming from each speaker is 0.470 W.
A rocket has a total mass of 1.12 105 kg and a burnout mass of 1.09 104 kg, including engines, shell and payload. Estimate the speed at burnout if gravity isn't neglected
The magnetic flux through the closed loop placed horizontally increases according to the relation ?(B)=1+6t2+7t3, What is the magnitude of the emf induced in the loop
A tiny sphere with a charge of q = +6.0 µC is attached to a spring. Two other tiny charged spheres, each with a charge of ?4.0-µC, are placed in the positions, in which b = 3.8 cm. The spring stretches 5.0 cm from its previous equilibrium position..
The acceleration of gravity is 9.8 m/s2. Find the speed of the block at the bottom of the ramp.
A .115 kg mass undergoes simple harmonic motion on a horizontal spring with force constant k= 287 N/m. estimate the amplitude of the motion
A light bulb has a resistance of 170 ohm when operating with a potential difference of 170 V across it. What is the current in the light bulb
Three identical masses of 620 each are placed on the x axis. One mass is at = -130 , one is at the origin, and one is at = 320. What is the magnitude of the net gravitational force on the mass at the origin due to the other two masses? Take the gr..
a johnny is running home from school to watch his favorite soap opera as the stomach turns. he runs 6 blocks east to a
Earth's gravitational field is 7.83N/kg at the altitude of the space shuttle. What is the size of the force of attraction between a student with a mass of 45.0kg and Earth?
A boy exerts a force of 225 N on a lever to raise a 1.25 x 10 3-N rock a distance of 13 cm. If the efficiency of the lever is 88.7%, how far did the boy move his end of the lever?
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