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A 20kg satellite has a circular orbit with a period of 2.4 h and aradius of 8.0 × 106m around a planet of unknown mass. If the magnitude of thegravitational acceleration on the surface of the planet is 8.0m/s2, what is the radius of the planet?
q1. a toy train rolls around a horizontal 1.2--diameter track. the coefficient of rolling friction is 0.15.what is the
A space probe is traveling in outer space with a momentum that has a magnitude of 4.29 x 107 kg·m/s. A retrorocket is fired to slow down the probe. Determine the momentum of the probe
One end of a 46-cm-long copper rod with a diameter of 2.8cm is kept at 490?C, and the other is immersed in water at 24?C. Calculate the heat conduction rate along the rod
Two concentric conducting spheres of radii a = 5 cm and b = 10 cm have a potential difference V = 100 V between them. What is the charge carried by each sphere
A system of 1454 particles, each of which is either an electron or a proton, has a net charge of -7.456×10-17 C. How many protons are in this system
You are arguing over a cell phone while trailing an unmarked police car by 26.0 m; both your car and the police car are traveling at 120 km/h. what is your speed (in km/h) when you hit the police car
There is evidence that elephants communicate via infrasound, generating rumbling vocalizations as low as 14 Hz that can travel up to 10 km. Determine the intensity level of the infrasound
In the figure R1 = 4.11 ?, R2 = 19.7 ?, and the ideal battery has emf ? = 13.0 V. How much energy is dissipated by all four resistors
The step-down transformer in a local neighborhood reduces the voltage from a 7,200 V line to 120 V. If there are 125 loops on the secondary, how many are on the primary coil
Although the evidence is weak, there has been concern in recent years over possible health effects from the magnetic fields generated by transmission lines. Estimate the magnetic field strength on the ground
Two trains, each having a speed of 38 km/h, are headed at each other on the identical straight track. A bird that can fly 70 km/h flies off the front of one train while they are 68 km apart and heads directly for the other train. On reaching other tr..
In the H atom the radius of orbit B is 16 times greater than the radius of orbit A. What is the total energy of the electron in orbit B
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