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Question1
A bolt drops from the ceiling of a train car that is accelerating northward at a rate of 3.50 m/s2.
(a) What is acceleration of the bolt relative to train car?
(b) What is acceleration of the bolt relative to Earth?
Question2
A 200, 45.0-cm-diameter turntable rotates on frictionless bearings at 63.0 rpm. A 19.0g block sits at the center of a turntable. A compressed spring shoots the block radically outward along a frictionless groove in the surface of a turntable.
Question3
A 199-kg log is pulled up a ramp by means of a rope that is parallel to the surface of ramp. The ramp is inclined at 32.5 ° with respect to the horizontal. The coefficient of kinetic friction between log and ramp is 0.872, and the log has an acceleration of 0.724 m/s2. Find out the tension in the rope.
Objects A and B are both positively charged. Both have a mass of 138 g, but A has twice the charge of B. How large is the electric force (in N) on A
A sanding disk with rotational inertia 2.4 10-3 kg•m2 is attached to an electric drill whose motor delivers a torque of 8 N•m about the central axis of the disk. What are the following values about the central axis at the instant the torque has been ..
A signal starts at x point. As it travels to y point it loses eight db. At point y the signal is boosted by ten db. As the signal travels to point z it loses 7 db.
When his mom asked him why he is smoking he told her, "Don't worry mom, it is not that bad after all." Which term is being described in Trent's situation.
an electric dipole has charges of +- 4.55pC that are seperate by 6.00cm. The dipole lies on the x axis and its center is at the origin. Determine the torque on the dipole about its center of mass
The air-conditioning system of a department store is designed to maintain a pressure of 0.22 in. find the net force due to pressure on a rectangular display window
A 35.0 cm diameter coil consists of 30 turns of a circular copper wire 2.80 mm in diameter. determine the rate at which thermal energy is produced
A speed skater moving across frictionless ice at 8.80 hits a 4.20-m-wide patch of rough ice. What is her acceleration on the rough ice
An electron is moving east in a uniform electric field of 1.53N/C directed to the west. What is the speed of the proton at point B
What vertical height does block reach above its starting point. What speed does it have when it slides back down to its starting point.
A standing wave is oscillating at 140 Hz on a string, as shown in the figure. What is the speed of traveling waves on this string
Calculate the total number of electrons bombarding the target of an X-ray tube operated at 100 mA for 0.1 seconds
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