An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?

A carnot heat engine has an efficiency of 0.800. if it operates between a deep lake with a constant temperature of 280.0 k and a hot reservoir, what is the temperature of the hot reservoir?

An ideal gas is at 29 ∘C. The gas is cooled, reducing the thermal energy by 10.0%. What is the new temp?

If an atomic bomb were detonated on the surface of the moon, how long would it be until we heard the explosion on Earth?

In a laboratory experiment, a diffraction grating produces an interference pattern on a screen. If the number of slits in the grating is increased, with everything else (including the slit spacing) the same, thenA.

Convert 125 km to miles. A. 201.159 miles B. 116.898 miles C. 77.675 miles D. 133.663 miles

A 7.00 kg mass is being pulled by a 53.8 n force what is the acceleration

2. How is temperature related to kinetic energy?

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.