For her first trial, the student decided to mix 250 mL of water at 20°C with 250 mL of water at 98°C. After waiting some time, she recorded the temperature of the mix to be 56°C.

what is the change in temperature of the cold and hot water

A cyclist accelerates at a rate of 7m/s2. How long will it take the cyclist to reach a speed of 18m/s

Which of the following best explains why snow predictions by meteorologists are sometimes incorrect? A. Weather data are misinterpreted. B. Weather instruments are extremely precise. C.

A car initially traveling at a speed of 16 meters per second accelerates uniformly to a speed of 20 meters per second over a distance of 36 meters. what is the magnitude of the car's acceleration?

An object moving on a horizontal, frictionless surface makes a glancing collision with another object initially at rest on the surface.

The y component of the electric field of an electromagnetic wave traveling in the + x direction through vacuum obeys the equation Ey = (375 N/C) cos[kx - (2.20 * 1014 rad/s) t]. What is the wavelength of this electromagnetic wave? (c = 3.

What are the parts of a pendulum? Describe each part.

Why do space suits need to be pressurized?

Why do comets have tails?

The main characteristic of all vertebrates is the presence of a. cartilage b. a large brain c. a backbone d. an exoskeleton I got it. The answer was B

A projectile is thrown upward so that its distance above the ground after t seconds is h (t) equals negative 16 t squared plus 704 t. a) Find the maximum height the object reaches. b) Find the time it takes the object to reach the ground.