Which statements about tsunamis are true?

They can occur only in water.

They can occur in water and on land.

We can predict them.

Underwater landslides can cause them.

Dam failures can cause them.

A negatively charged iron ball on the end of a plastic rod exerts a strong attractive force on a penny even though the penny is neutral. how is this possible?

A 900 kg steel beam is supported by the two ropes shown in (Figure 1). Calculate the tension in the rope.

A car drives 215 km east and then 45 km north. What is the magnitude of the car's displacement? Round your answer to the nearest whole number.

If a rock is thrown upward on the planet Mars with a velocity of 18 m/s, its height (in meters) after t seconds is given by H = 18t - 1.86t2. (a) Find the velocity of the rock after one second. 14.28 Correct: Your answer is correct.

The average kinetic energy of 1 mole of a gas at 273 degrees Celsius is: 6.81 x 103 J 3.40 x 103 J 1.51 x 103 J 6.72 x 101 J

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?

A light ray travels inside a horizontal plate of glass, striking its upper surface at an angle of incidence of 50°. This ray is totally internally reflected at the glass-air boundary. A liquid is then poured on top of the glass.

A stationary object has no forces acting on it. True False

April swims 50 m north and then turns and swims 20 m back to the south. What is her velocity if it takes her 60 seconds?

What happens to the mass of an object when it is cooled?