A train travels 68 kilometers in 4 hours, and then 91 kilometers in 2 hours. What is its average speed?

A 65-year-old male enters the hospital with high blood pressure, damaged lungs, low blood-oxygen concentration, and throat cancer. What are all of these symptoms associated with?

How to calculate time using power and energy

What is an electron? A. A positive particle inside the nucleus B. A negative particle outside the nucleus C. A particle inside the nucleus that has no charge D. A negative particle inside the nucleus

How do the discovery of gravity and the invention of electronic satellites most likely relate to the processes of scientific investigation and technological design?

Which of the following is equal to an impulse of 15 units? A) Force = 10, Time = 0.5 B) Force = 7.5, Time = 2 C) Force = 20, Time = 1.5 D) Force = 15, Time = 1.5

In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the whole body weight. Use the model to fins a. the weight of a human whose weight is 183 lbs.

For a projectile launched from the vertically from the surface the earth with initial velocity v0, the velocity of the projectile when at distance r from the center of the earth satisifes the equation: v^2 =

What is the formula for convection?

A 398-kg boat is sailing 14.0° north of east at a speed of 1.50 m/s. 23.0 s later, it is sailing 33.0° north of east at a speed of 4.40 m/s. During this time, three forces act on the boat: a 32.8-N force directed 14.

You use sunglasses to reduce the glare of the sun when you go outside. You are taking advantages of light's ability to do which of the following? Possible Answers: to reflect to refract to diffract to polarize