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If a car shifts gears from first to second after 5 seconds, when the speed is 60mph. Second to third happens after 10 secondswhen the speed is 85 mph. Its speed is 110 after 15seconds.A) Find the time taken to complete .25 miles from rest.B) Find the instantaneous velocity at the 5 second mark?C) What is the Average velocity during the first 5 seconds?D) What is the average acceleration during the first 10seconds?E) At what time is the instantaneous acceleration equal to theacceleration found in D?
Two planets are on a collision course, heading directly toward each other at 0.250c. A spaceship sent from one planet approaches the second at 0.750c as seen by the second planet. find the velocity of the ship relative to the first planet
A pair of in-phase stereo speakers is placed side by side, 2m apart. You stand directly in front of one of the speakers, 5m from the speaker. What do you hear.
a positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. what is the system's total kinetic energy
A uniform electric field exists in the region between two oppositely charged parallel plates 1.67cm apart, Find the speed of the proton at the moment it strikes the negatively charged plate
A puck of mass m1 = 1.50 kg slides in a circle of radius r = 20.0 cm on a frictionless table while attached to a hanging cylinder of mass m2 = 2.50 kg by a cord through a hole in the table
A screen is placed 1.84 m behind a single slit. The central maximum in the resulting diffraction pattern on the screen is 2.70 cm wide; that is, the two first-order diffraction minima are separated by 2.70 cm. What is the distance between the two sec..
A taut rope has a mass of 0.170 kg and a length of 3.55 m. What power must be supplied to the rope to generate sinusoidal waves having an amplitude of 0.110 m and a wavelength of 0.490 m, traveling with a speed of 31.0 m/s?
A power supply that provides a voltage of 42.0 V·sin(362·t), where t is in seconds, is connected across a resistor R = 119 ?. Calculate the average power dissipated in the resistor
As observed on earth, a certain type of bacterium is known to double in number every 6 hours. how many bacteria are in the culture on the rocket, according to an earth-based observer
A heat engine operates between a cold reservoir at 10 C and a hot reservoir at 200 C. how much heat must be exhausted as waste
A uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
A When the magnetic flux through a single loop of wire increases by 30 Webers, a current of 40.0 A is induced in the wire. over what time did the flux change
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