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Determine the average speed of a molecule of NaCl in the atmosphere? (Assume room temperature.)
in m/s
You place 110 moles of hydrogen gas in a balloon of volume 2.6m3, and evaluate the pressure to be 1.7 times atmospheric pressure. Find the typical speed of a hydrogen molecule?
A generator can be made using the component of Earth's magnetic field that is parallel to Earth's surface. Estimate the maximum emf induced in the coil by Earth's magnetic field
If the principal quantum number n were limited to the range from 1 to 5, how many elements would we find in nature
A boy throws a 1.5 kg rock upward. To do so the boy applies a constant 38.5 N force upwards on the rock from point a to point b. after that the rock continues upward to its highest height at point c.
A ball is thrown from a rooftop with an initial downward velocity of magnitude vo = 5.8 m/s. The rooftop is a distance above the ground, h = 43 m.
a helicopter has 3.0 m long rotor blades rotating at an angular speed of 63 rad/s. What is tangential speed of each blade tip
question a rotating wheel requires2.90s to rotate through 37.0 revolutions. its angular speed at the end of the2.90s
Water at 22.0 °C is sprayed onto 0.203 kg of molten gold at 1063 °C (its melting point). What is the minimum mass of water that must be used
You ionize a tyrosine amino acid using a laser that has a wavelength of 146 nm. What is the ionization energy of tyrosine
a molecule of dna deoxyribonucleic acid is 2.16 microm long. the ends of the molecule become singly ionized negative on
A transformer has 380 primary turns and 1220 secondary turns. The input voltage is 120 V and the output current is 15.0 A. What is the output voltage and input current
Consider a rectangular loop of wire 6.3 cm by 8.2 cm in a uniform magnetic field of magnitude 1.7 T. What is the average induced emf in the loop
two flexible balls rolling along a frictionless horizontal surface collide with each other. the larger of the balls
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