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Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. The orbital speeds of the planets are determined to be 41.0 km/s and 55.1 km/s. The slower planet's orbital period is 8.57 years.
(a) What is the mass of the star?
(b) What is the orbital period of the faster planet, in years?
In a television picture tube, electrons strike the screen after being accelerated from rest throughout a potential difference of 28000 V.
A horizontal light ray is incident on a crown glass prism as shown in the figure below where ? = 42.5°. Find the angle of deviation ? of the ray-the angle
Consider a container of 2.0 g of hydrogen, H2 (one mole). What electric force do the protons exert on the electrons after they are separated as described
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
A 42.5 mA current is carried by a uniformly wound air-core solenoid with 425 turns, a 19.5 mm diameter, and 13.0 cm length. Compute the inductance of the solenoid
all the data for this problem come from a conservative dialect of vegraveneto a romance language spoken in northern
A torque of 16Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 1.26 eV. What is the width of the square well
Find an average magnitude of the induced emf . A bungee jumper, who's mass is 79 kg, jumps from a tall building. After reaching his lowest point, he continues to oscillate up and down, reaching the low point two more times in 8.2 s.
A body of mass M is at rest. It suddenly explodes into three pieces. One mass is .25M, moves due east at 12m/s. Find the velocity of the remianing piece
What is the centripetal acceleration of an object on the Earth's equator owing to the rotation of the Earth? What would the period of rotation (in hours = h) of the Earth have to be for objects on the equator to have a centripetal acceleration equ..
The magnetic field in a solenoid is B = (µ0NI) / d. A circular wire of radius 10 cm is concentric with a solenoid of radius 7 cm, What is the non-Coulomb electric field in the wire
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