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A 2.5 kg container of water sits on a scale A. A cube of aluminium with sides of length 9.0 cm is suspended from a spring scale B so that one sixth of the block is submerged in the water.
1. What is the reading (in N) on scale A?
2. What is the reading (in N) on spring scale B?
A laser beam is directed from air (n = 1.0) into an unknown liquid. The angle of incidence is measured to be 60° and the angle of refraction is measured to be 45°. What is the index of refraction of the unknown liquid?
The right figure shows a force of magnitude F = 12.0 N applied to an 8.00 kg block at a downward angle of ? = 30.0°. find the magnitude of the frictional force on the block
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a 98.53 cm long heating wire is connected to a 138 v outlet. if the wire dissipates 79.5 w what is the current in the
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 2.00 104 Pa, Find the volume flow rate through the pipe
A runner covers one lap of a circular track 40.0m in diameter in 63.5s, what was her average speed for that half-lap
If a photon is a wave and is moving (along the X-axis) at the speed of light, isn't any specific part of the wave moving faster than the speed of light? A specific point on the wave moves up and down yet is traveling in the X direction at the speed o..
On a clear day the electric field in the atmosphere near the earth's surface is 100 N/C, directed vertically downward. What is the potential at the top of Pike's Peak, 14,110 ft above sea level
A 509-?F capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 97.9 V to 22.7 V in 4.99 s. Find the resistance of the resistor in kilohms
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