Physics Answers

Determine the frequency , wavelength, speed and period in the equation y=2.5π cos(110t+ x/0.025)

If a peice of loaf is placed on a plate and a dog take it away than why would plate start rotating?

as a building consultant, how will you advise using your knowledge in physics, such that the bedroom of an apartment will be much cooler and conducive to sleep in

2. A 0.15kg meterstick is supported at the 50cm mark. A mass of 0.5kg is attached at the 80cm mark.

a. How much mass should be attached to the 40cm mark to keep the meterstick horizontal?

b. Determine the supporting force from the fulcrum on the meterstick.

Activity 8.5. Solve the following comprehensively. Box your final answers.

1. A 1.20kg disk with a radius of 10.0 cm rolls without slipping. The linear speed of the disk is 1.41m/s.

a. Find the translational KE.

b. Find the rotational KE.

c. Find the total kinetic energy.

Activity 8.3: Linear versus Rotational

How does a rigid body rotate if the ω and α have the same sign (say +)? Compare these relationships between linear acceleration (a) and linear velocity (v) for straight line motion.

What is the energy of a 10kg mass position at 100m above the surface of the earth

A hoist operated by an electric motor raises a load of 300kg vertically at a steady speed of 0.2ms-1. Frictional resistance can be taken to be constant at 1200N. How much is the total force

A projectile is fired horizontally at a speed of 8 m/s from an 80-m-high cliff. Find the angle of impact

1. Roronoa Zoro runs forward, from rest, with an acceleration of 8 m/s2.  If he covered 25 m, what was his final velocity?

1. A rollerskater experiences an acceleration of 2.2 m/s2. As a result, she accelerates from rest to 12 m/s. How much distance did she travel during that acceleration?

1. A hat is dropped from a 44 m tall building. How fast will it be going when it strikes the ground? (Acceleration is -9.8 m/s2)

1. The Lizard chases after Spider-Man and experiences an acceleration of 5.2 m/s2. As a result, he accelerates from rest to 14.8 m/s. How much distance did the Lizard cover?