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A runner weighs 595 N (about 130 lb), and 70% of this weight is water.
1) How many moles of water are in the runner's body?
2) How many water molecules (H2O) are there?
Starting from rest several toy cars roll down ramps with differing lengths and angles. Rank them by their speed to the bottom ofthe ramp from the slowest to fastest. Car A goes down a 10 mramp inclined at 15 degrees, car B goes down a 10 m ramp incli..
A 4.0cm tall apple is 20cm in frount of a plano-convex lens of focal length 75cm. Find the location of the image of the apple
A 43.0-N child is in a swing that is attached to ropes 1.60 m long. Find the gravitational potential energy associated with the child relative to her lowest position at the following times.
The temperature of 1.3 kg of water is 34° C. To cool the water, ice at 0° C is added to it. The desired final temperature of the water is 11° C. determine how much mass m of ice should be added
A converging lens of focal length 7.90 cm is 19.3cm to the left of a diverging lens of focal length -6.01 cm. A coin is placed 11.9 cm to the left of the converging lens. Compute the magnification of the coin's final image.
A ball is shot from the ground into the air. At a height of 8.6 m, the velocity is observed to be v = (8.1)i + (5.3)j in meters per second (i horizontal, j upward). To what maximum height will the ball rise
A 400 cm rope under a tension of 90 N is set into oscillation. The mass density of the rope is 170 g/cm. What is the frequency of the first harmonic mode (m = 2)?
\(\sum_{}^{}A_{n}sin(nk_{1}z); n = 1, 3, 5.....\) Formula 1 Formula 2 Prove the following two statements using a method that makes use of the normal modes of a continuous string with appropriate boundary conditions, and is equivalent to the the Fo..
Radioactive decay of granite and other rocks in the Earth's interior provides sufficient energy to keep the interior molten, heat lava, and supply warmth to natural hot springs.
Jason has a 45-power telescope whose objective lens has a focal length of 120 {\rm cm}. What is the angular magnification of his sister when viewed through the "wrong" end of the telescope
A constant force of magnitude F makes an angle ? (measured counterclockwise) with the positive x direction as it acts on an object of mass m moving in the xy plane. How much work is done on the object by the force
A bullet of m=3.80g moving at 514m/s impacts a large fixedblock of wood and traveles .0610m before comming to rest. find the force exerted by the wood on the bullet
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