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Question: A 20-g bead is attached to a light 120-cm long string. This bead moves in a horizontal circle with a constant speed of 1.5 m/s.
Part A: What is the tension in the string if the angle is measured to be 25 degrees?
I need help to find the tension in the string if the angle is measured to be 25 degrees.
The slope of the velocity time graph is the instantaneous acceleration. Instantaneous velocity is the derivative of the displacement time function. Average acceleration and instantaneous acceleration are always the same.
An iron bar 50 cm long is raised to a copper bar 60 cm long and of the same diameter. What is the heat flow down the rod if its cross-sectional area is 2.50 cm2
A ball is thrown with an initial speed of 60.0 m/s at an angle of 30 degrees above the horizontal. What is the balls vertical displacement at the end of 4.00 seconds
A surveyor measures the distance across a straight river by the following method: Starting directly across from a tree on the opposite bank, he walks x = 102 m along the riverbank to establish a baseline. How wide is the river
What is the minimum uncertainty in position, in nm, of an electron whose velocity is known to be between 2.30×105m/s
A hydrogen atom is in its second excited state (n = 3). Using the Bohr theory of the atom, compute the following. The total energy, The potential energy, The kinetic energy, The radius of the orbit
Using a highly sensitive parabolic sound collector, Amy records the frequency of a tuning fork as it drops into the Grand Canyon. She drops the vibrating tuning fork from rest at t=0. She records a frequency of 1657.0 Hz at t=6.400 s. What is the ..
A man stands on a scale inside an elevator at rest. The scale reads 800 N. Determine what is the man mass
A uniform brass disk of radius R and mass M with a moment of inertia I about its cylindrical axis of symmetry is at a temperature T = 37 °C. Determine the fractional change in its moment of inertia
308 moles of helium at 7.45 x 105 Pa are held at 158 C. What is the volume in m3
Suppose 1.86 kg of water at 14.4C is mixed with 2.28 kg of water at 79C. After equilibrium is reached, the mixture has an uniform temperature of 49.9768C. What is the change in entropy of the system? The speci?c heat of water is 4186 J/kg · K.
A coil of inductance 90 mH and unknownresistance and a 0.80 µF capacitorare connected in series with an alternating emf of frequency945 Hz. If the phase constant between theapplied voltage and the current is 75°, what is the resistanceof the coil in ..
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