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Besides protons, what other particles make up an atom. Write two or three sentences identifying the attractive forces that act between a proton and each of these other particles.
The right-side rearview mirror of Mike's car says that objects in the mirror are closer than they appear. What is the focal length of the rearview mirror
A shell is fired from a gun with a muzzle velocity of 25 m/s, at an angle of 60° with the horizontal. How far from the gun does the other fragment land
A light bulb filament has an emissivity of 0.29. At a temperature of 2790 K, the filament radiates 55 W of power. What is the surface area of the filament? ___ m^2
A car is accelerating while its horn is blowing. Just after the car passes a stationary person, the person hears a frequency of 978 Hz. 16.0 seconds later, the frequency heard by the person has decreased to 915 Hz.
A female gymnast weighs 620 N. If she is hanging stationary from a high bar, how many forces are acting on her.
A steel ball of mass 0.400 kg is fastened to a cord that is 60.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. Find the speed of the block just after collision
A spaceship of mass 2.30×106kg is cruising at a speed of 4.30×106m/s when the antimatter reactor fails, blowing the ship into three pieces. What is the speed of the third piece
An 89.6-kg jogger is heading due east at a speed of 2.97 m/s. A63.1-kg jogger is heading 18.2 ° north of east at a speed of2.26 m/s. Find (a) the magnitude and(b) the direction of the sum of the momenta of the two joggers. Describe the direction as a..
On Earth, you swing a simple pendulum in simple harmonic motion with a period of 1.6 seconds. What is the period of this same pendulum on the Moon?
A radio station broadcasts at a rate of 89.3 million cyces each second. what is the period of this wave and if the wavelength is 3.359 meters, what is the speed of this radio wave
a vector that is 7.4 units long and a vector that is 5.4 units long are added. their sum is a vector 12.3 units long. a
Distinguish between a ground state for an electron and an excited state. How many visible lines make up the emission spectrum of hydrogen? What are their colors?
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