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The earth's magnetic field can affect the electron beam in an oscilloscope or a television tube. An electron that has been accelerated through a potential difference of 1.23 104 V has a horizontal initial velocity, directed north. Find the magnetic force on the electron when the earth's field has a horizontal component of 0.250 G and dips 60.0° below the horizontal (values typical in California).
One kilogram of dry air is warmed from 20ºC to 70ºC under a constant pressure of 1atm. Calculate the change in internal energy
A sample of a material has 40000 radioactive particles in it today. Your grandfather measured 80000 radioactive particles in it 60 years ago. how many radioactive particles will the sample have
A cannon fires a cannonball from the top of a wall at a speed of 25.58 m/s and an angle of 17.44 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
Knowing the temperature at the surface of the Earth to be 72 F, find the temperature at the surface of Venus. ( show your work step by step.)
A rifle bullet of mass 8.6 g is fired into a 1.23 kg block where it becomes embedded. what was the initial speed of the bullet
A rectangular block of glass is totally immersed in water (n = 1.33). What is the refractive index of the glass
A body is traveling at3.0 m/s along the positive directionof an x axis; no net force acts on the body. What is the speed of the forward part
A 3.5-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,063oC is placed on top of a 2.5-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
A 0.60 kg piece of aluminium at a temperature of 180 C is dumped into 900 mL of water at a temperature of 30 C. What's the final equilibrium temperature
How kinetic energy is related to linear momentum and What is the difference between elastic and inelastic collisions
A cooking vessel on a slow burner contains 11.2 kg of water and an unknown mass of ice in equilibrium at 0°C at time t = 0. determine the initial mass of ice
It has been proposed to save fuel in air travel by reducing the air speed. How much fuel is saved in a 2000 mile trip
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