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To determine the diameter of the sun, an astronomer might sight with a transit first to one edge of the sun and then to the other, estimating that the included angle equals 32'. Assuming the distance (d) from Earth to the Sun is 92,919,800mi, approximate the diameter of the sun.
It is claimed that a black hole is so strong in its gravitational pull that even light cannot escape from it. However, if the speed of light, and gravitational forces are constant, then light should be able to escape from the black hole if it can ..
A large metal ring has a radius of 0.30 m and a mass (uniformly distributed) of 2.5 kg. The ring hangs from a nail as shown. What is the rotational inertia of this object
What is the charge q. suppose the speed of sound in air to be 343 m/s.
An isotope of beryllium with an atomic mass of 7.017u emits a gamma ray and recoils with a speed of 2.19m/s. find the wavelength of the gamma ray
A particle of charge q = e moves in a circle of radius = 0.54 m with speed v = 1.000×107 m/s. find the maximum torque exerted on the loop by a uniform magnetic field of magnitude B = 1.00 T
A car travels east at 77 km/h for 6.0 h. It then travels 40.0° east of north at 112 km/h for 6.0 h. What is the average velocity for the trip
A 1.6mH inductor is connected in parallel with a variable capacitor. The capacitor can be varied from 100 pF to 200 pF. find the maximum oscillation frequency for this circuit
When an 81.0 kg adult uses a spiral staircase to climb to the second floor of his house, his gravitational potential energy increases by 2.10 x 10^3 J. By how much does the potential energy of a(n) 20 kg child increase when the child climbs a norma..
suppose that a 70.0kg box is pulled by 400N firce at an angle of 30 degree to the horizontal. The coefficient of sliding friction is 0.500. find the acceleration of the box
In order to generate an induced voltage, a coil of cross sectional area 2x10^-4 m^2 is placed in a .4T magnetic field, How many times must the flip coil have to induce a voltage of 120V
A wire, of length 250 centimeters, and radius 0.3 millimeters is stretched by hanging on a weight of 12 kilograms, Calculate the value of Young's modulus for the wire
A 75-Kg athlete does a single-hand handstand. If the area of thehand in contact with the floor is 125 cm2, what pressureis exerted on the floor?
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