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you are driving at a speed of 20 m/s. suddenly you see a deer 100m in front of the car and hit the brakes immediately. you are just able to save the deer. (a) calculate the acceleration. (b) how many seconds did you need to stop the car?
1. A modern-day zeppelin holds 8,280 m3 of helium, Compute its maximum payload at sea level
As you zip through space in your PPS (personal propulsion suit), your pulse rate, as you count it, is 115 bpm, How fast are you moving with respect to the Moon
A physics professor wants to demonstrate the large size of the henry unit. On the outside of a14-cm-diameter plastic hollow tube, How many kilometers of copper wire will be required
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
A bungee jumper (m = 74.00 kg) tied to a 42.00 m cord, leaps off a 72.00 m tall bridge. What size impulse is exerted on the bungee jumper while the cord stretches
Two speakers face each other and radiate coherently and in phase. The speakers are separated by a distance of 5.50 m, What is the wavelength of the sound
The angular speed of a propeller on a boat increases with constantacceleration from 10.9 rad/s to 24.0 rad/s in 2.20 revolutions. What is the acceleration of the propeller
Two lenses having focal lengths of f1=15 cm and f2=9 cm are separated by a distance of 50cm. If the lenses are moved into contact, what is their combined focal length
A 76.2-kg skier rides a 2520-m-long lift to the top of a mountain. find the change in the skier's gravitational potential energy
a stone is shot from the edge of a cliff 125 m above ground level with an initial speed of 65 ms at an angle of 37
A resistance of ohms ,an inductive reactance of 8 ohms and capacitive reactance of 15 ohms are connected in parallel across 120V, Find total current , power factor
a target shooting game wooden blocks are thrown into the air and shot in flight. a block of 0.8kg has a speed of 10 ms
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