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Car 1 is traveling at 85km/h approaching car 2 traveling at 60km/h. At 10m behind car 2, car 1 decelerates at 4.2m/s^2. What will be the distance between the cars at their closest approach?
A transformer has 280 turns in the primary and 110 turns in the secondary. by what factor does it change the voltage
calculate stopping distance from 62 mph for a vehicle with a tireroad friction coefficient equal to 0.6 0.8 and 1.0
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +10q. Sphere B carries a charge of -7q. Sphere C carries no net charge.
question a swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s. she is swept
A passenger on a boat moving at 1.20 m/s on a still lake walks up a flight of stairs at a speed of 0.50 m/s. What is the velocity of the passenger relative to the water
One of the harmonic frequencies of tube A with two open ends is 1020 Hz. The next-highest harmonic frequency is 1088 Hz. What is the number of this next-highest harmonic
0.20 g of hydrogen gas are held in a rigid container. the temperature of the gas is changed from 50 K to 80 K. How much heat is needed
The magnetic field in an electromagnetic wave has a peak value given by B = 2.1uT, Find the peak intensity
q1. a 2.60- metal bar 1.50 long and having a resistance of 10.0 rests horizontally on conducting wires connecting it to
In a model AC generator, a 500-turn rectangular coil 8.0 cm by 20 cm rotates at 120 rev/min in a uniform magnetic field of 0.60 T. what is the maximum emf induced in the coil.
A positron and an electron each of mass 9.1 x 10-31kg are in the same general vicinity and have very small initialspeeds. They then annihilate each other producting two photons
In a head-on collision, a car stops in 0.16 from a speed of 28. What force is applied to the driver by his seat belt during that fraction of a second
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