A submarine travels 25 km/h north for 3.2 hours. What is its displacement?

A.

7.8 km north

B.

28.2 km north

C.

80.0 km north

D.

253 km north

Determine the x, y, z components of reaction at the fixed wall a. the 150-n force is parallel to the z axis and the 200-n force is parallel to the y axis.

Copernicus patterned his concept of the solar system after that of

A sand core used to form the internal surfaces of a steel casting experiences a buoyancy force of 225 n. the volume of the mold cavity forming the outside surfaces of the casting = 4840 cm3.

Which best describes the direction of heat?

The sweeping second hand on your wall clock is 24cm long. a) What is the rotational speed of the second hand? b) Find the translational speed of the tip of the second hand. c) Find the rotational acceleration of the second hand.

How is friction related to conservation if mechanical energy?

Does the ear drum vibrates when struck by sound waves and directly sends a message to the brain that is then recognized as sound?

Think of an example that you could use to convice a friend that an object at rest has an "internal hold back property" that is different from a frictional force or the force of the earth's gravity.

Sally places a jar with some pennies into a pool of water and exactly half of the jar is submerged. The volume of the jar is 200 cm3 and the density of the water is 1 g/cm3. a. What is the buoyant force acting on the jar? b.

According to the law of reflection the angle of incidence is equal to the angle of blank