A truck driver travels 55 km in 1 hour he then drives a speed of 35 km/h for two hours next he drives 175 km in three hours. what was his average speed?

Which of the following is NOT a source of energy for external radiation therapy? a. beta b. x-ray c. gamma d. proton

A patio swing is suspended by two springs, each of which has a force constant of 450 N/m equivalent to a single spring forest constant of 900 N/m. Find the mass of a person sitting on the swing oscillating up and down out of 0.560 Hz.

I. A car travels at uniform velocity a distance of 100m in 4 seconds. What is the velocity of the car?

Which feature of the sun is caused due to an eruption of high-energy radiation? Corona Prominence Solar flare Sunspot

A boy pulls a sled 46 m across a flat field with a force of 120 N. The force acts on the sled through a rope at a 23° angle with the horizontal. What is the work the boy does on the sled? (Round your answer to two significant figures.)

What makes the lumbar vertebrae different from the cervical vertebrae and the thoracic vertebrae?

Matter has Certain types of what

Identify the type of relationship that exists between density and temperature

You are standing on the sidewalk and see a bus drive by. What would be an ideal frame of reference? A bird flying overhead A jogger running along the sidewalk A car driving alongside the bus A tree across the street

One isotope of sodium has 11 protons and 7 neutrons. What is the mass number of this isotope?