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If the rms speed of the molecules of a quantity of helium at temperature 142 K is the same as the rms speed of neon atoms at a second temperature, what is the temperature of the neon gas?
The x position of (a) is 8.6 m. The y position of (b) is 8.68 m. The wave travels at a speed of 3.2 m/s. What is the amplitude of the wave?
An astronomical telescope uses an eyepiece of power +80.000 D. what is the magnification of the telescope
A spherical weather balloon is filled with hydrogen until its radius is 3.00 m. Its total mass including the instruments it carries is 15.0 kg. Find the buoyant force acting on the balloon, assuming the density of air is 1.29 kg/m3. N
A concave mirror has a radius of curvature of 24cm. Determine the object position for which the resulting image is upright, draw a ray diagram to determine the position of the image
An elevator cable breaks when a 975 kg elevator is 24.5 m above the top of a huge spring (k = 8.00 x 10^4 N/m) at the bottom of the shaft. Calculate the amount the spring compresses
Three resistors, 27, 49, and 79 ?, are connected in series, and a 0.51-A current passes through them. What is the potential difference across the three resistors
What is the magnitude of the average force on Superman's chest from the stream of bullets.
A uniform horizontal wire with a linear mass density of 0.50 g/m carries a 1.8 A current. It is placed in a constant magnetic field with a strength of 4.00 x10-3 T. The field is horizontal and perpendicular to the wire. Neglect the magnetic field ..
In 2.0 minutes, a ski lift raises 4 skiers at constant speed to a height of 170 m. The average mass of each skier is 65.00 kg. What is the average power provided by the tension in the cable pulling the lift.
If a plaintiff voluntarily enters into or participates into a risk activity that results in injury, illustrate what is the most likely defence that he or she may use to a defendant's claim that the plaintiff supposed the risk?
Carry out the following arithmetic operations: (a) sum of the measured values 756, 37.2, 0.83 and 2.5. The answer must be in significant digits. Since 2.5 and 0.83 have two significant digits, shouldn't the answer be 800 instead of 797.
Two crates, of mass 75.0 kg and 109 kg, are in contact and at rest on a horizontal surface. A 732 N force is exerted on the 75.0 kg crate. What is the force the each crate exerts on the other.
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