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An electron, initially traveling in the +x-direction with a speed of 4 x 105 m/s, enters a uniform electric field directed vertically upward. After traveling in this field for 3.5 x 10-7 s, the electron's velocity is directed 60º above the x-axis. What is the strength of the electric field?
The potential difference between the plates of a capacitor is 247 V. Midway between the plates, a proton and an electron are released. find the initial speed of the proton
A 54 kg ice skater is moving at 39 m/s when she grabs theloose end of a rope, the opposite end of which is tied to apole. What is the ratio of this force to her weight
A motorcycle, which has an initial linear speed of 9.7 m/s, decelerates to a speed of 2.6 m/s in 3.6 s. Each wheel has a radius of 0.69 m and is rotating in a counterclockwise (positive) directions. What is (a) the constant angular acceleration (in r..
Two stars located 27 light-years from Earth are barely resolved using a reflecting telescope having a mirror of diameter 66 cm. find the separation between the stars
A car of mass 1500kg turns an incined corner (radius 50m, angle 30degrees), How fast can the corner be taken without losing traction
at most how many bright fringes can be formed on each side of the central bright fringe not counting the central bright
question a child throws a ball downward from a tall building. note that the ball is thrown not dropped and disregard
some light rays from a small object sitting on the optical axis of a lens pass through a lens and then all of the rays
an ideal physics text with a mass of 2.5g is placed on a rough incline. The coefficients of static and kinetic friction are .3 and .2 respectively. what is the magnitide of the acceleration of the text
A 78 person sits on a 3.6 chair. Each leg of the chair makes contact with the floor in a circle that is 1.0 in diameter. Find the pressure exerted on the floor by each leg of the chair
A current of 0.80A flows through a copper wire 0.50mm in diameter, How long is the wire in km
What is the smallest capacitor needed in a computer power supply in order to produce at least 3.55 V for 0.37 seconds after the power goes off? Assume that the resistance of all the components of the computer motherboard is 6 Ohms and that the capaci..
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