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Question 1 If an electron travels 0.300 m from an electron gun to a TV screen in 18.0 ns, what voltage was used to accelerate it? (Note that the voltage you obtain here is lower than actually used in TVs to avoid the necessity of relativistic corrections.)
Question 2 The voltage across a membrane forming a cell wall is 74.0 mV and the membrane is 8.80 nm thick. What is the electric field strength? (The value is surprisingly large, but correct. Membranes are discussed in Section 19.7* of the textbook.) You may assume a uniform E-field
An astronaut is rotated in a horizontal centrifuge at a radius of 7.5 m. (a) What is the astronaut's speed if the centripetal acceleration has a magnitude of 5.4g? (b) How many revolutions per minute are required to produce this acceleration.
A box slides down a 40° ramp with an acceleration of 1.260 m/s2. Find out the coefficient of kinetic friction between box and ramp.
The ball leaves his racket with a speed of 16.0 m/s at an angle 5.5 degrees above the horizontal. The horizontal distance to the net is 7.0 m and the net is 1.0 m high. Explain by how much did the ball clear the net?
If the maximum acceleration the vehicle's brakes are capable of is -5 m/s2, what is the maximum reaction time of the motorist that would allow her or him to avoid hitting the deer.
A large tanker truck can carry 30 ton (30,000 lb) of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry.
How many times hotter than the Sun's surface is the surface of a star the same size, but that gives off twice the Sun's energy per second (that is, is twice as luminous)?
An airplane pilot wishes to fly due west. A wind of 72.0 km/h is blowing toward the south, What is the speed of the plane over the ground
How much energy is delivered to the battery. What is the velocity v of the smaller fish before lunch.
A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for that the stick will remain in equilibrium.
A particle moves along the x axis unset the influence of a stationary object. The force exerted on the particle is given bu F=8x^3, where f is in newton's and x is in meters. if x=0 is taken to be the zero of potential energy, then the potential e..
What is the highest compression of the spring for a perfectly inelastic impact.
A motorcycle starts with a constant acceleration of 3.0 m/s^2. At just that instant a buick with a constant speed of 20 m/s passes the motorcycle, How fast is the motorcycle travelling when it overtakes the buick
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