The attendance qt a seminar in a year 1 was 500 in year 2 the attendance changed by 100 what was the percent change in attendance?

If you do 1,000 J of work on a system and remove 500 J of heat from it, what is the change in its internal energy

What changs occurs in the core of a massive starbpreceding a supernova?

For a short period of time, the frictional driving force acting on the wheels of the 2.5-Mg van is N, where t is in seconds. If the van has a speed of 20 km/h when t = 0, determine its speed when t = 5 s.

The free fall distance for Earth is given by the formula D=4.9 x T2, where D is distance in meters and T is time in seconds.

Why does light refract when entering a different medium of propagation?

Calculate the gravitational potential energy of a 10kg box on the top shelf of a closet, 2m above the floor

In late adulthood, changes in memory may bot be inevitable however, any decline in memory tends to invite

On october 15, 2001, a planet was discovered orbiting around the star hd 68988. its orbital distance was measured to be 10.5 million kilometers from the center of the star, and its orbital period was estimated at 6.3 days.

A container of rocks with a mass of 65.0 kilograms is brought back from the moon's surface where the acceleration due to gravity is 1.62 meters per second2. what is the weight of the container of rocks on earth's surface?

A curved, transparent object used to refract light