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The left ventricle of the heart accelerates blood from rest to a velocity of +24 cm/s^2. If the displacement of the blood during the acceleration is +1.7 cm describe its acceleration in cm/s^2. How much time does it take for the blood to reach its final velocity?
For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
Bowling balls can be made from a variety of substances and are required to have a circumference of roughly 27.0 inches. calculate the thickness of the shell
A movie camera with a (single) lens of focal length 85 mm takes a picture of a person standing 35 m away. what is the height of the image in millimeters on the film
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, what is the coefficient of kinetic friction
A Federation starship ( 2.10×106kgkg ) uses its tractor beam to pull a shuttlecraft ( 2.10×104kgkg ) aboard from a distance of 15.0kmkm away. The tractor beam exerts a constant force of 4.0×104N4.0 \times 10^{4}\;{\rm N} on the shuttlecraft. Both spa..
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 32.5 dB. What is the intensity delivered to the eardrum
You plan to project an inverted image 30.0 cm to the right of an object. You have a diverging lens with focal length -4.00 cm located 5.40 cm to the right of the object. What is the focal length of the second lens
A wall in a house contains a single window. The window consists of a single pane of glass whose area is 0.19 m2 and whose thickness is 9 mm. what is the percentage lost by the window
What is the angle. The velocity of a particle moving in the xy plane is given by = (5.5t - 4.5t2)i + 8.3j
A lightbulb operates at a power of 60 watts when connected to a potential difference of 120 volts. In this condition, how many electrons are passing though it per second
A block is given an initial velocity of 5 m/s up a frictionless 20 ° incline. How far up the incline does the block slide before coming (momentarily) to rest.
A continuous line of charge lies along the x axis, extending from x = +x0 to positive infinity. What is the direction of the electric field at the origin
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