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A 30kg man climbs to the top of the slide 4m high. He slidesdown to the bottom.
A) What is his kinetic energy at the bottom if there is nofriction on the slide?
B) What is his kenetic energy at the bottom if there isfriction and it does -500J of work on him?
A lunch tray is being held in one hand, as the figure illustrates. The mass of the tray itself is 0.214 kg, and its center of gravity is located at its geometrical center. Obtain the force exerted by the thumb
Find A (Vector potential of the Magnetic dipole) on a diagonal of a square side S and of current I at a distance Sqrt(2)S from the corner.
Although all atoms have moving electric charges, not all materials are magnetic (for example, copper or wood are not magnetic). Why, then, aren't all materials magnetic?
A duck is swimming down a river and passes a slow moving log. what is the ratio of the log\'s mass to the duck\'s mass
question two runners start simultaneously from the same point on a circular 200m track and run in opposite directions.
A thermodynamic system undergoes a process in which itsinternal energy increases by520 J. what is the energy transferred toor from it by heat
A granite ball of radius 2.00m and emissivity of 0.450 is heated to 135 C whereas the ambient temperature is 25 C. What is the net power radiated from the ball
a 1 mW laser produces photons of wavelength 633 nm. How many photons per second does the laser emit
The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. For comparison, determine the weight of a jetliner whose mass is 6.04 × 105 kg
An ultraviolet lamp emits light of wavelength 400 nm at the rate of 430 W. An infrared lamp emits light of wavelength 700 nm, also at the rate of 365 W. Which lamp emits photons at the greater rate
When a battery is connected to a 100-Ω resistor, the current is 4.00 A. When the same battery is connected to a 421-Ω resistor, the current is 1.07 A. Find the emf supplied by the battery and the internal resistance of the battery.
Young's double-slit experiment is performed with 570 nm light and a distance of 2.00 m between the slits and the screen. The tenth interference minimum is observed 7.64 mm from the central maximum. Settle on the spacing of the slits.
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