A Cessna 172 aircraft must reach a speed of 35 m/s for takeoff. How long of a runway is needed if the acceleration of the aircraft is a constant 3 m/s2

When the pressure at the bottom of a submerged object is greater than the pressure at the top of submerged object, buoyant force is produced. A. True B. False

It takes 200 N to move a box 10 meters in 8 seconds. How much power is required? O O A. 250 W B. 25 W O O c. 2,000 J D. 16,000 W Q

An ice block measuring 5cm by 5cm by 5cm has a desity of 5g/cm3. What is the mass of the ice block?

A box of volume V has a movable partition separating it into two compartments. The left compartment contains 3000 particles, the right one contains 1000 particles, and initially the partition is in the middle so that the compartments are of equal

A pendulum completes 30 cycles every minute what is the period of the pendulum?

The first hominine in the genus Homo was named Homo habilis because evidence indicates that members of the species used

Planets move around the sun in elliptical orbits. A. true B. false

A 113 kg man sits on the stern of a 6.3 m long boat. The prow of the boat touches the pier, but the boat isn't tied. The man notices his mistake, stands up and walks to the boat's prow, but by the time he reaches the prow, it's moved 3.

What os the term for the smallest bit into which chemical substance can be divided and still have the properties of that substance A : eletron B:molecule c:atom D:ion

How many excess electrons must be present on each sphere if the magnitude of the force of repulsion between them is 4.57*10-21 newtons?