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?

How is an electromagnet different from a magnet? a A magnet depends upon strength of the current. b An electromagnet can be changed by changing the amount of current.

During a hard sneeze, your eyes might shut for 0.50 s. If you are driving a car at 90 km/h during such a sneeze, how far does the car move during that time?

What is something that claims to be science but is not?

Menciona un ejemplo de la vida cotidiana donde se apliquen las cuatro fuerzas fundamentales de la naturaleza.

A person pushes horizontally with a force of 220. N on a 61.0 kg crate to move it across a level floor. The coefficient of kinetic friction is 0.270.

The magnetic flux through each turn of a 110-turn coil is given by ΦB = 9.75 ✕ 10-3 sin (ωt), where ω is the angular speed of the coil and ΦB is in webers. At one instant, the coil is observed to be rotating at a rate of 8.70 ✕ 102 rev/min.

A comet has a period of 324 years; in other words, it orbits the Sun in 324 years. Most likely, this comet came from ... (Hint: 324 years define a long period comet) A. Somewhere outside the solar system B. Oort's cloud C. The ecliptic plane D.

4. A pendulum oscillates 12 times in 4 seconds. a. What is the frequency of the pendulum's oscillations? b. What is the period of the pendulum's oscillations?

How many protons and electrons are present in a vanadium atom?

A dog runs 27 m in 3 s. what is the dogs average speed. a 9 m/s b 24 m/s c 30 m/s d 81 m/s