Why is the mechanical advantage of a bottle opener always greater than 1?

Farah is doing an experiment that involves calculating the speed of a longitudinal wave. What will most likely happen if she increases the temperature in the room? The amplitude of the wave will increase. The amplitude of the wave will decrease.

A rocket's mass decreases as it burns fuel. the equation of motion for a rocket in vertical flight can be obtained from newton's law and is

Sort the sentences based on whether they describe the properties of a heterogeneous or a homogenous mixture. homogenous mixture heterogeneous mixture to put in the boxes Its components are visible. It may be mistaken for a pure substance.

Which is an example of data? A. Variables B. Theories C. Measurements D. Laws

Which statement best describe he work of Marie and Pierre cutie? Check all that apply

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

Sound travels 2146 m through a material in 1.4 seconds. What is the material?