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A bird is flying horizontal to the ground and its motion is in the xy coordinates. Between t=0 and t=10.0 s, the velocity of the bird is given as v→=(1.10m/s2)ti^+[13.0m/s-(2.00m/s2)t]j^.
a- Find the time t, when the velocity of the bird is 90 degree to its acceleration?
A laser beam passes during a slit of width1.0 cm and is pointed at the Moon, which is approximately380,000 {\rm km} from the Earth. Suppose the laser emits waves of wavelength 630 {\rm nm} (the red light of a He-Ne laser).
A movie star catches a reporter shooting pictures of her at home. She claims the reporter was trespassing and to prove her point, How far away from the subject was the reporter standing
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 56° C. What is the temperature coefficient of resistivity
A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 34.3m/s2, Find the maximum height ymax reached by the rocket
The terminal voltage of a certain battery is measured with the battery disconnected and is found to be 6.30 V. Find the voltage across the battery terminals
a a standing wave is described by the expression zxt6sinx2cos40pit find the amplitude frequency wavelength velocity and
The speed of an alpha particle is determined to be 8.75×106 m/s. If all of its kinetic energy is acquired by passing through an electric potential, what is the magnitude of that potential
If you moved too far away from the wall the circle of light probably became very difficult to see. Is the intensity of the light circle ever zero
Assume all the electrons in 21 gram of copper atoms were placed at the North Pole of the earth and all the protons at the South Pole. Obtain how many electrons are in 21 grams of copper
Give the complete design and justify size and runtime efficiency. How can you extend the same idea to distributed systems?
The light isotope of lithium, 5Li is unstable and breaks up spontaneously into a proton (hydrogen nucleus) and an particle (helium nuclus). In this process, a total energy of 2.75 10-13 J is released, appearing as the kinetic energy of the two rea..
What is the gravitational force on a 20-kg satellite circling the Earth (radius = 6.4 × 106 m, mass = 6.0 ×1024 kg) with a period of 5.0 h?
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