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Determine the stopping distances for a car with an initial speed of 95 km/h and human reaction time of 1.0s for an acceleration?
(a) a = - 4.0m/s2
(b) a = - 8.0 m/s2.
A heat engine does 393.9 J of work per cycle while exhausting 582.64 J of heat to the cold reservior. what is the cold reservior temperature in degrees Celsius
A meter stick of mass 0.25 kg is mounted on a perpendicular axis at the 20 cm mark. Determine the angular acceleration of the ruler
An astronaut who is repairing the outside of her spaceship accidently pushes away a 90.5-cm-long steel rod, What is the magnitude of the EMF, in millivolts, induced between the ends of the rod
Assume the coefficient of static friction between the tires and the road on a Formula One car is 0.9 during a Grand Prix auto race. Find what speed will put the car on the verge of sliding
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the speakers are 23cm apart. What is the wavelength of the sound
Two hockey players( one of mass 10 kg, and the other of mass 15kg) are skating and collide and stick together.? the velocity of the first sketer is 10 m/s, the other is 17 m/s. what is their speed at the moment of the collision? question: is there a ..
When a water gun is fired while being held horizontally at a height of 1.00 m above ground level, the water travels a horizontal distance of 4.90 m. how far will the water travel horizontally
A solar cell generates a potential difference of 0.320 V when a 445.0 ? resistor is connected across it and a potential difference of 0.504 V when a 945.0 ? resistor is substituted. What is the emf of the cell
A certain crystal has a set of planes 0.31 nm apart. A beam of neutrons strikes the crystal at normal incidence, What is the de Broglie wavelength of the neutrons
If 3.43×10^8 electrons flow through the ground wire to Earth and the ground wire is then removed, what is the net charge on the electroscope.
1. a 2.0-m rope is lying on a table. you pick up one end and start raising it. how high above the table is the center
A person is observing the motion of a ball on a flat surface and measuring its position in time. What will be the velocity of the ball relatively to each of the two observers
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