As the distance between two point charges is tripled, the electrostatic force between the charges
What is the relationship between I1 and I2?
The diagram represents two charges q1 and q2, separated by distance d. Which change would produce the greatest increase in the electrical force between the two charges?
A simple circuit has a current of 3.0 A and a resistance of 5.0 ohm . What is the voltage supplied by the battery of this circuit?
Two metal spheres, A and B, possess charges of 1.0 microcoulomb and 2.0 microcoulombs, respectively. In the diagram below, arrow F represents the electrostatic force exerted on sphere B by sphere A.
Which arrow represents the magnitude and direction of the electrostatic force exerted on sphere A by sphere B?
The force of gravity on the surface of the moon is about one-sixth the force of gravity on the surface of Earth. Which describes the relationship of mass and weight of an object on the moon compared to that on Earth?
At a certain distance from the center of Earth, a satellite experiences a gravitational force, F. If the mass of the satellite was doubled and placed into the same orbit, what gravitational force would the satellite have acting on it?
Two spheres, 1.00 kg each, whose centers are 2.00 m apart, would have what gravitational force between them?
Which diagram shows a planet with the least eccentric orbit?
The accompanying chart gives the mass and orbital period (time it takes to go around the Earth) of each of four satellites, A, B, C, and D, orbiting Earth in circular paths. Which satellite is closest to the Earth?
The table below shows gravitational data for a planet traveling in an elliptical orbit around a star. The table shows the relative gravitational force between the star and this planet at eight positions in the orbit (letters A through H). Higher numbers indicate stronger gravitational attraction.
Which diagram best represents the positions of the planet in its orbit that would produce the gravitational forces shown in the data table?
Which statement describes the motion of Earth around the sun?
The data table shown gives the mean radius of orbit R and the period T of some planets orbiting the Sun. Which ratio is constant for these planets?
Which of the following quantities does Coulomb's law describe?
If the distance between two charges is halved, how does the electrostatic force change?
Which variable is directly proportional to the current in a circuit?
What is the unit of electrical resistance?
What happens to the current in a circuit if the voltage is doubled?
According to Kepler's second law, a planet moves faster when it is
According to Kepler's first law, the shape of a planet's orbit is
Which factor affects the gravitational force between two objects?
What happens to gravitational force when the distance between two objects increases?
Which of these best defines a satellite orbit?
What determines the period of a satellite's orbit?
What happens to the speed of a satellite as it orbits closer to a celestial body?
Why is the International Space Station (ISS) able to stay in orbit around the Earth?
A wire carries a current of 3 A. What is the charge passing through the wire in 5 seconds?
A resistor has a resistance of 10 Ω and a current of 2 A. What is the voltage across the resistor?
A circuit has a potential difference of 12 V and a resistance of 3 Ω. What is the current in the circuit?
Two charges are placed 2 meters apart. The electrical force between them is 9 N. If one charge is 3 C, what is the magnitude of the other charge?
Two point charges, 4 μC and -2 μC, are separated by a distance of 2 meters. What is the magnitude of the electrical force between them?
The weight of an object on Earth is 120 N. What will be its weight on a different planet with twice the mass of Earth and the same radius?
Two objects attract each other with a gravitational force. If the mass of one object is doubled and the distance between them is halved, how will the force change?
Which factor does not affect the orbital period of a moon?
What is the relationship between the velocity and radius of the moon's orbit?
Which factor affects the period of the moon's orbit?
What happens to the gravitational force between the moon and the planet if the distance between them is doubled?
If the mass of the planet is doubled while the distance from the moon to the planet remains the same, what happens to the gravitational force on the moon?
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.70 × 104 m/s, and the radius of the orbit is 5.25 × 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.60 × 106 m. What is the speed of the second satellite?
A satellite is placed in orbit 7.00 × 106 m above the surface of Jupiter. Jupiter has a mass of 1.90 × 1027 kg and a radius of 7.14 × 107 m. Find the orbital speed of the satellite.