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Q. What is the mass of an ice cube, taken from a -19.0^circ C freezer, that will cool your coffee to a pleasant 59.0^circ?
Q. How much work must be done to bring three electrons from a great distance apart to within 2.1×10-10 {rm m} from one another (at the corners of an equilateral triangle)?
An alpha particle (m = 6.7 ´ 10-27 kg, q = +3.2 ´ 10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out an electric potential difference V..
An electron is released from rest at the negative plate of a parallel plate capacitor. The charge per unit area on each plate is = 2.6 x 10-7 C/m2, the plates are separated by a distance of 1.4 x 10-2 m. How fast is the electron moving just before..
If so how fast will the cars be traveling when they collided? If they did not, what is a distance between the cars at this point.
Suppose that the mass of the dishwater is large as much as necessary so that its temperature does not change appreciably.
The human body can survive a negative acceleration trauma incident (sudden stop) if the magnitude of acceleration is less than 250 m/s^2.
Find the mans rate of sweat production
An event occurs at x′ =60m, t′ =8×10-8 sec in a frame S′ (with y′ =0, z′ = 0). The frame S′ has a speed of 3c/5 in the x direction with respect to frame S. The origins of S and S′ coincide at t = 0, t′ = 0. What are the spacetime coordinates of th..
A spring stretches 4.1 cm when a 11 g mass is hung from it. If a total mass of 25 g attached to this spring oscillates in simple harmonic motion,how to calculate the period of motion.
A 23 kg body is moving in the direction of the positive x axis with a speed of 292 m/s when, owing to an internal explosion, it breaks into three pieces.
Three charged particles are placed at corners of an equilateral triangle of side 1.20m. The charges are + 7.0 mc,-8.0 mc and -6.0 mc compute the magnitude and direction of the net force on each due to the other two.
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
An insulated Thermos contains 210 cm3 of hot coffee at 88 °C. You put a 19.00 g ice cube at its melting point to cool the coffee. By how many degrees has the coffee cooled once the ice has melted and equilibrium is reached? Treat the coffee as though..
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