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A 3.0-kg block is dragged over a rough horizontal surface by a constant force of 16 N acting at an angle of 37° above the horizontal as shown. The speed of the block increases from 4.0 m/s to 6.0 m/s in a displacement of 5.0 m. What work was done by the friction force during this displacement?
Two girl scouts are sitting in a large canoe on a still lake while at summer camp. The canoe happens to be oriented with the front of the canoe pointing due north.
a certain solenoid consists of 100 turns of wire and has a length of 10.0 cm.a find the magnitude of the magnetic field
A parallel-plate capacitor is formed from two 4 electrodes spaced 1.20 mm apart. The electric field strength inside the capacitor is 1.29x 10^6. What is the charge (in nC) on each electrode.
A cockroach of mass m lies on the rim of a uniform disk of mass 2.42 m that can rotate freely about its center like a merry-go-round. Find the angular velocity of the cockroach-disk system
While using a dimmer switch to investigate a new type of incandescent light bulb, you notice that the light changes both its spectral characteristics
State both the primitive and the modern definitions of time. Which do you find the more reasonable
Light propagating in the glass n1= 1.65 wall of an aquarium tank strikes the interior edge of the wall with incidence angle 19.0 degrees . What is the angle of refraction in the water
the driver of a 3000 lb car coasting down a hill sees a red light at the bottom and must stop. his speed when he
An uncharged capacitor and a resistor are connected in series to a battery, as shown in the figure above. If V = 14.0 V, C = 5.30 µF, obtain the time constant of the circuit
What speed is achieved by a proton accelerated from rest between the same two points? (Neglect relativistic effects)
A 15 g bullet is fired at a 2.1 kg wooden block which is hung at the end of 1.35 meter long string as a ballistic pendulum. the bullet strikes the block and embeds itself 10 cm into the block. the pendulum then swings up to an angle of 27.5 degree..
In walking across a carpet, you acquire a net negative charge of 60 μC. Find how many excess electrons do you have
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