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The two stars in a binary star system have masses 2.2×1030 and 6.5×1030 . They are separated by 2.1×1012 .What is the system's rotation period, in years? What is the speed of the lightest star? What is the speed of the heaviest star?
A parallel-plate capacitor in air has a plate separation of 1.50 cm and area of 25.0 cm^2. find the charge on the plates before and after immersion
The magnetic flux through each loop of a 75-loop coil is given by (8.8t-0.5It^3) Tm2 where the time is in seconds. Determine the induced emf as a function of time
A fast tortoise runs with a speed of 10.0 cm/s and a hare runs 20.0 times faster. They start a race together but the hare stops to rest for 2.00 minutes. What distance did the hare cover
a random sample of 49 selected from a population with a standard deviation of 14 yielded a mean 125. the mean and the
An electron that has an energy of approximately 2.0e+01 eV moves between rigid walls 1.8 nm apart. Find the precise energy of the electron
What is the potential difference between the terminals of a battery that can impart 6.8×10?19 \rm J to each electron that moves between the terminals
A 4.89-g bullet is moving horizontally with a velocity of +345 m/s, where the sign + indicates that it is moving to the right. What is the velocity of the second block after the bullet imbeds itself
Three forces acting on an object are given by 1 = (?2.45 + 5.60) N, 2 = (5.30 ? 1.3) N, and 3 = (?42.5) N. What is the direction of the acceleration
A parallel-plate capacitor is formed of two 10 cm x10 cm plates spaced 1.0 cm apart, What is the slowest speed the electron can have if it is to reach the negative plate
The plates of a parallel-plate capacitor have a separation of 3.56 mm , and each has an area of 14.0cm^2. what is the magnitude of the electric field between the plates
A 2.97-kg projectile is fired with an initial speed of 133 m/s at an angle of 28° with the horizontal. At the top of its trajectory, the projectile explodes into two fragments of masses 0.97 kg and 2 kg. At 3.87 s after the explosion, the 2-kg fragme..
A wooden raft has a mass of 55 kg. When empty it floats in water (density 100 kg/m^3 with 64% of its volume submerged. What mass of sand can be put on the raft without it sinking
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