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A standard cassette tape is located in a standard cassette player. Each side plays for 45 minutes. The two tape wheels of the cassette have a diameter of 2.3 centimeter when fully wound and fit onto two 1.0 centimeter diameter spindles in the player. Assume that motor drives one spindle at constant angular speed of 1.0 rad/s and the other spindle is free to rotate at any angular speed. Find what is the tapes thickness.
cm
Point A is at position (4j -3k)cm. Point B is at position -3cm k. Point C is at position (3i -2j + 5k) cm. Point D is at position 4cm j. Charges of -4 and +5uC are at A and B respectively. What is the electric potential energy of an electron at D
Sunlight strikes a piece of crown glass at an angle of incidence of 30.0 degrees. Calculate the difference in the angle of refraction between a red (660.0 nm) and a blue (470.0 nm) ray
A spherical balloon is made from a material whose mass is 3.00 kg. The thickness of the material is negligible compared to the 1.4 m radius of the balloon. Find the absolute pressure of the helium gas
A projectile is fired at an angle such that the vertical component of its velocity and the horizontal component of its velocity are both equal to 19 m/s. How long does it take for the ball to reach its high point
A nickel crystal is used as a diffraction grating for x-rays. Then the same crystal is used to diffract electrons. what is the kinetic energy of each electron
A uniform disk of radius 0.519 m and unknown mass is constrained to rotate about a perpendicular axis through its center. Find the mass of the disk
A scintillator absorbs an incident flux of 5 MeV alpha particles that totals 10^6 particles/s, estimate the expected signal from the photodiode
A car speeds along the curved exit ramp of a freeway. The radius ofthe curve is 86 m. A 68 kg passenger holds the arm rest of a car door witha 220 N force to keep from sliding across the front seat of thecar.
A 245 kg person lays on board that is supported only on the ends and that has a mass of 12.0 kg. what is the force on either side where the board is supported
Measurements with microelectrodes have shown that a 0.30-nm-diameter potassium ion(K+) channel carries a current of 1.8 pA, How many potassium ions pass through if the ion channel opens for 1.0 ms
A 0.470 kg pendulum bob passes through the lowest part of itspath at a speed of 3.80 m/s. What is the tension in the pendulum cable when the pendulumreaches its highest point
how many electrons should be removed from an initially uncharged spherical conductor of radius 0.200 m to produce a
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