In a television tube, the electron travels from an electron gun to the screen 0.45 m away in 6.0 x 109 s. If the electron starts from rest, what is its final speed when it hits the screen?
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- How much work is required to stop an electron (m=9.11×10−31kg)(m=9.11×10−31kg) which is moving with a speed of 1.90×106 m/s ? Express your answer to three significant figures and include the appropriate units.An electron (mass = 9.11 × 10−31 kg) is accelerated along a straight line at 3.9 × 1014 ms−2.The electron has an initial speed of 3.2 × 106 ms−1 and travels a distance of 3.0 cm. Calculatethe electron’s: a) final speed.b) change in kinetic energy.An enthusiastic NVCC student goes to an amusement park to ride on a roller coaster. The height of the first hill is 80m. If the cart is moving at 4.4m/s at the top of this hill and the entire roller coaster is frictionless, at what speed is the cart moving when it returns back to the level of the ground? If the cart then goes up another hill that is 25m tall, how fast is it going as it goes over the top of that hill?
- Please help with my homework An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV, and the second with 100 keV. Which is faster, the electron or the proton ? Obtain the ratio of their speeds.(Electron mass =9.11×10−31kg=9.11×10-31kg, proton mass =1.67×10−27kg,1eV=1.60×10−19J)=1.67×10-27kg,1eV=1.60×10-19J).An electron is traveling at 5×105 m/s when it is 3 nm away from a proton. What is the speed of the electron if it escapes the proton to a location far away from it?A baseball pitcher can throw a ball with a speed of 40 m/s. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 10 m/s. What is the speed of the truck?
- Two planets of mass 3 x 1025kg are release from rest 2.0 x 1012 m apart. What is the speed of the planets when they are half this distance apart?A proton moves from point A to B. It's initial speed is v0=1.0×10^5 m/s. What is the proton's speed as it passes through point B?The rest energy E of an object with rest mass m is given by Albert Einstein’s famous equation E = mc2, where c is the speed of light in vacuum. Find E for an electron for which (to three significant figures) m = 9.11 * 10-31 kg. The SI unit for E is the joule (J); 1 J = 1 kg . m2/s2.
- An object is moving at 3.5 m/s as it rolls up a frictionless hill. How fast will the object be moving when it is 0.5 m above the ground?What is the speed of the particle when it reaches x = 24.00 m.Two planes approach each other head-on, each has a speed of 785 kph and they spot each other when they are initially 11 km apart. How much time do the pilots have to take evasive action?