When equal masses of water and of methane gas absorb the same amount of heat, the change in temperature of the methane is greater than the change in temperature of the water. Which property helps...

When equal masses of water and of methane gas absorb the same amount of heat, the change in temperature of the methane is greater than the change in temperature of the water. Which property helps...

How much heat is needed to boil 2.65 kg of water at its boiling point? Use Q = mass latent heat of vaporization. Properties of water Property Value Melting point 0C Boiling...

Determin the force if the work done is 75J due to applied force. Find the total work done on the box by the applied force and the gravity Find the Final speed of the...

A 1.2 kg toy car moving toward the east at 6.8 m/s collides with a 3.6 kg toy truck moving toward the north at 4.2 m/s. If they lock together, how many degrees east of north do they head after the...

When a ball is thrown through the air, or a person skydives from a plane, quadratic functions (and parabolas) describe their motions. Gravity causes items to fall at an acceleration rate of 32 feet...

Near the shore, winds tend to blow toward the land during the day. What drives this process? A. Cool air above the water conducts heat to the warmer air above the land. B. Warm air above...

The latent heat of vaporization of a substance is the amount of energy associated with doing which of the following to 1 kg of the substance? A. Melting it at its melting point B...

Two small spheres are located 0.50 m apart. Both have the same charge on them. If the repulsive force is 5.0 N, what charge is on the spheres, in μC?

Pedro is planning to model how changes in weather affect evaporation from lakes. For his second experiment, he wants to test how winds affect the evaporation rate. He places one beaker with 300 mL...

1.A 1500 kg car travelling at 80 km/h comes to a screeching halt in a time of 4 seconds. Calculate the force of friction experiences by the car. 2.A 1 kg ball travelling towards a soccer...

A flagpole consists of a flexible, 4.79 m tall fiberglass pole planted in concrete. The bottom end of the flagpole is fixed in position, but the top end of the flagpole is free to move. The wave propagation...

You are given three 2 ohm resistors, some wire, a variable DC voltage supply, a voltmeter and ammeter. A. Draw a schematic diagram of a circuit that will produce an equivalent resistance of 3...

An electron carries a charge of -1.6 x 10-19 C. If a force of 3.2 x 10-17 N causes the electron to move upward, what is the magnitude and direction of the electric field. Answer: 2.0x10^2N/C...

How much potential energy would an electron in a hydrogen atom lose if it fell toward the nucleus from a distance of 7.5 x 10^-11 m to a distance of 5.0 x 10^-11 m? Answer:- 1.6 x 10^-18 J

How much work is needed to bring a + 5.0 μC point charge from infinity to a point 2.0 m away from a + 25 μC charge? Answer: 0.56 J

One electron has a mass of 9.1 x 10-31 kg. How many coulombs of charge would there be in 1 kg of electrons? How much force would this charge exert on another 1 kg of electrons 1.0 km away? (This is...

Why do we normally measure charge in μC instead of Coulombs?

Compare the general magnitude of the force of gravity and the electrostatic force. Consider the constants in each equation to explain the difference (use the equation for the universal force of gravity)...

2 trains pass each other. One is going east at 70 mph; the other is travelling west at 50 mph. A passenger on the eastbound train walks toward the back of the train at 5 km per hour. Relative to the...

A 2.5 g steel ball moving 0.40 m/s collides elastically with a stationary, identical ball. As a result, the incident ball is deflected 30.00 from its initial path. a. What is the velocity of the...

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