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A river is 175 meters wide and has a current that is flowing at 4 meters/second from the north to the south. A swimmer tries to cross the river at a velocity of 9 meters/second.
What velocity and heading will the swimmer have to use to get 50 meters upstream from directly across the river in 19.4 seconds?
Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? Explain physically why it does or does not agree.
A diffraction grating with 1000 slits/cm is oriented parallel o the y-axis and its center is located on the x-axis at x = -5.00 m. At how many locations does constructive interference occur on the y-axis
two charges q1 and q2 have a total charge of 16 c. when they are separated by 1.5 m the force exerted by one charge on
an initially uncharged electroscope is polarized by bringing a negatively charged rubber rod near the bulb. if the bulb
question the initial velocity of a 4.0kg box is 11ms due west. after the box slides 4.0m horizontally its speed is 1.5
The max wavelength of light, which emits electrons is 460 nm. Calculate work function of sodium
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. obtain the coefficient of friction between the cheese and ice
A 2.0 kg mass moves with a speed of 5.0 m/s. It collideshead-on with a 3.0 kg mass at rest. If the collisionis perfectly inelastic, what is the speed of the masses after the collision
A concentration difference of a certain solute of 1.0 Ã- 10â€"2 kg/m3 is maintained between the ends of a tube with a length of 3.5 m and a cross-sectional area of 0.25 m2. What is the diffusion constant for the solute
Two capacitors (2,0 uF and 4,0 uF) are connected in series across 300-V potential difference. Calculate the total stored energy in the system
The average density of the solar wind at 1 AU is 7protons/cm3 and has an average radial speed of 400 km/s.Assuming that the mass of the solar wind was conserved as it movedaway from the sun and the speed remained constant, estimate themass/second of ..
Find out the force each hand exerts on the shaft when the shaft is rotating in the horizontal plane about its center at 5×10-2 {rm rev/s}.
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