Which of the following is true about the weight of an object?

It remains same for the object.

It cannot be measured accurately.

It is a force acting on the object.

It is always less than the mass of the object.

What happens to the velocity of a sound wave in the air if the temperature of the air increases?

The density of Gold is 19.3 g/cm^3. What is this value in kilograms per cubic meter?

An object of mass 1 kg is traveling with a constant speed of 10 m/s in the positive x-direction. Consider case 1 in which the object above comes to a stop in 1 second.

Explain the effect on corn seedling height of increasing the application amount of gibberellin from 0.05 to 0.50 microgram

How much water is stored in groundwater lakes rivers soil and streams

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.

A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes that there was once water in that location that created the ripples. Why is this conclusion reasonable?

In science what is the requirement of doing work?

What Fitness Gram test is assessing your cardiovascular endurance?

A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). A straight blue line runs with an upward slope from 0 seconds 3 meters to 4 seconds 15 meters. The starting position of this object is m.