High friction materials

A body starting from rest moves with uniform acceleration until it attains a speed of 100m/s after 20 s. It maintained this speed for the next 30s and came to rest by uniformly deceleration in 30s. (a.) Find its acceleration.

In a chemical equation, numbers often appear in front of a chemical formula. What do these numbers indicate? The number of atoms in each molecule in the reaction. The number of molecules in each atom in the reaction.

Emmett is lifting a box vertically. Which forces are necessary for calculating the total force?

Which characteristic measurement of a wave is identified by the letter A on the diagram below? Wave A. amplitude B. loudness C. wavelength D. frequency

How is reflection of light evident in nature?

Which type of star is the sun

Where the sun's energy is produced

If you are standing at a beach on Earth at the same time that the shadow of the moon falls across your location, what event would you be able to witness at that time? A solar eclipse B lunar eclipse C low tide D full moon

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.