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A 2.1*10^3 kg car starts from rest at the top of a driveway that is sloped at an angle of 20 degrees with the horizontal. an average friction force of 4*10^3 N impedes the car's motion so that the car's speed at the bottom of the driveway is 3.8 meters per second. what is the length of the driveway?
Three resistors, 21, 39, and 73 , are connected in series, determine the potential difference across the three resistors
A screen 1-m wide is 2.0 m from a pair of slits illuminated by 633-nm laser light, with the screen's center on the center line of the slits. How many fringes will be visible on the screen
A prehistoic bug (m=0.02kg) has escaped into the moder world. how fast (and in what direction) is the ubg traveling after the collision
A long, thin metal tube of cross-sectional area 1.65 cm2 is sealed into the top of a hollow cube of edge length 0.145 m. What is the weight of the water
A slug of mass 0.100 kg moving straight upward at 50.0 m/s collides with a 0.400 kg wooden block that is 20.0 cm long on a side, What is the loss of kinetic energy immediately before/after the hit
What is the unknown charge at x = +0.19 m in micro-coulombs? If negative, indicate so with a negative sign, but omit a sign if positive.
Find the eight ball's speed after the colision. Parallel rays of green mercury light with a wavelength of 546 nm pass through a slit with a width of 0.437 mm. What is distance from the central maximum to the first minimum on a screen 1.75 mm away f..
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
The plane is inclined at an angle of 24.9 degrees with the horizontal. Using the accerlation due gravity from your reference table. Illustrate what is the magnitude of object's acceleration?
A car travels at a constant velocity 30im/s for 20km, then it travels at 40im/s for the next 20km and, finally at 0im/s for the last 20km. Find the Average velocity and speed for the entire trip.
A 74.9-kg skier rides a 3180-m-long lift to the top of a mountain. The lift makes an angle of 17.0 ° with the horizontal
What is the stress and strain in a 2 meter high, .025 m diameter brick column that supports a mass of 100000 kg? What is the factor of safety in the brick column
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