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Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. (a) How many electrons are there in 9.42 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3) (b) What is the net charge of all these electrons?
As observed from Earth, the wavelength of Hβ in the spectrum of the star Megrez in the Big Dipper is 486.112 nm. Laboratory measurements demonstrate that the normal wavelength of this spectral line is 486.133 nm. Is the star coming toward us or mo..
A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 × 10-12 m from the plutonium nucleus.
A bullet leaves a standard 45-caliber pistol (5.0-in. barrel) at a speed of 262 m/s. If it takes 1 ms to traverse the barrel, determine the average acceleration experienced by the 16.2-g bullet within the gun and after that compute average force e..
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
The driver of a car wishes to pass a truck that is travelling at a constant speed of 20 meters per second. Initially, the car is also travelling at 20 meters per second and its front bumper is 24 meters behind truck's rear bumper.
Kieran takes off down a 50m high, 10° slope on his jet-powered skis. The skis have a thrust of 320 N. The combined mass of skis and Kieran is 50 kg (the fuel mass is negligible). Kieran's speed at the bottom is 40 m/s. What is the coefficient of k..
A rectangular loop of wire has dimensions 0.5m by 0.3m. The loop is pivoted at x axis and lies in the xy plane. A uniform magnetic field of magnitude 1.5 T is directed at an angle of 40° with respect to the y axis with field lines parallel to the ..
An electron is projected vertically upward with a speed of 1.65x10^6 m/s into a uniform magnetic field of 0.160 T that is directed horizontally away from the observer. What would the radius of the circle be.
A 120 granite cube slides down a 40 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 290 steel cube at rest. How high above the table should the granite cube be released to give steel cube a spe..
Coherent light with wavelength of 602 passes by two very narrow slits and the interference pattern is observed on a screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
What type of weather front will be responsible for the following weather forecast? "Cool today with rain becoming heavy by this afternoon. Slightly warmer tomorrow. "Winds south easterly becoming westerly to north westerly by the tomorrow morning."
A 36.4 kg child starting from rest slides down a water slide with the vertical height of 20.7 m. (Neglect friction.) What is the child's speed three-quarters of the way down.
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