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A commuter backs her car out of her garage with a constant acceleration of 1.60 m/s2.
(a) How long does it take her to reach a speed of 1.90 m/s?
(b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration?
A glass sheet is covered by a very thin opaque coating. In the middle of this sheet there is a thin scratch 1.25×10-3mm thick. The sheet is totally immersed beneath the surface of a liquid.
If the human aorta has a cross-sectional area of 2.5 cm2 and the flow speed of blood in the aorta is 30 cm/s while the density of blood is 1.05 g/cm3. Calculate the mass flow rate of blood (in g/s) in the aorta
A pitcher throws a baseball vertically upward with an initial speed of 15.0 m/s, releasing the ball when it is 2.00 above the ground, How long is the ball in the air
A spherically symmetric electromagnetic wave is emitted by a 1030 W source. What is the rms value of the electric field at that distance
A capillary tube is being used to measure the viscosity of a Newtonian liquid, Estimate the viscosity coefficient for the liquid if a pressure of 2.5 kPa is required to maintain a flow rate of 1 kg/s
You fly your 15 m spaceship, parallel to the ship's length with a speed of c/3 to your friend. How long is your spaceship as observed by your friend
A circular saw blade of diameter 0.175m starts from rest. In a time interval of 5.60s it accelerates with constant angular acceleration to an angular velocity of 140rad/s
At the end of a race a runner decelerates from a velocity of 8.00 m/s at a rate of 0.300 m/s2. What is her final velocity
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 29.7 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 3.10 10-11 W/m2. What is intensity delivered to t..
your car engine just died. your were moving rightward at 25 m/s, but your car slows to a rest in a distance of 120 m. what net average force was exerted on the car
zorch, an arch enemy of superman, decides to slow earth's rotation to once per 27.0 h by exerting an opposing force at, How long must zorch push with this force to achieve his goal
Find the electric field of a solid sphere of charge, with the nonuniform charge density ρ = Ar, with A an overall constant
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