Which speed (s) is/are below the sound barrier in air? A. 257 m/s B. 1,030 m/s C. 10 m/s

Ashanti is 18 months old. When her mom leaves her at the babysitter's house, Ashanti cries initially. After a few moments, she stops crying because her mom is "out of sight and out of mind.

A projectile is defined as:

A device on a building that absorbs radiant energy from the sun is

A compact car a maximum acceleration of 3.0 m/s^2 when it carries only the driver and has a total mass of 1300 kg. What is the maximum acceleration after picking up their luggage, adding an additional 400 kg of mass?

Are there more females or males

Light from the sun travels through space to Earth's atmosphere. Which will light waves do when they move from empty space into matter made up of different gases? A. move at the same speed B. move faster as they transmit C. slow down and refract D.

A 12.5 kg box sliding on a frictionless flat surface tuns into a fixed spring which compresses at a distance x = 14.1 cm. the spring constant is 94.5 kN/m Find the initial speed of the box

An earth scientist who studies hydrosphere

In 1991 four English teenagers built an eletric car that could attain a speed of 30.0m/s. Suppose it takes 8.0s for this car to accelerate from 18.0m/s to 30.0m/s. What is the magnitude of the car's acceleration?

A capacitor with a capacitance of 490 μf is charged to a voltage of 260 v. then a wire is connected between the plates. how many joules of thermal energy are produced as the capacitor