During its entire motion, the acceleration of a projectile is always g

Indicate whether the statement is true or false


T

Physics & Space Science

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Which of the following best describes the modern definition of a constellation?

A) a region of the celestial sphere B) a pattern of bright stars in the sky C) a Greek mythological figure D) a collection of stars that are near one another in space E) a group of stars that all lie at about the same distance from Earth

Physics & Space Science

A solar or lunar eclipse will occur

a. when the Sun is near the line of nodes of the Moon, and the Moon is new or full.
b. any time the Moon is new or full.
c. when the Sun is near the solstice, and the Moon is new or full.
d. half-way through an eclipse year.
e. when the Sun is near the equinox, and the Moon is new or full.

Physics & Space Science

A 3.00-m rod is pivoted about its left end. A force of 7.80 N is applied perpendicular to the rod at a distance of 1.60 m from the pivot causing a ccw torque, and a force of 2.60 N is applied at the end of the rod 3.00 m from the pivot. The 2.60-N force is at an angle of 30.0o to the rod and causes a cw torque. What is the net torque about the pivot? (Take ccw as positive.)

a. 16.4 N·m b. –8.58 N·m c. 8.58 N·m d. –16.4 N·m e. 4.68 N·m

Physics & Space Science

In a certain particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.67 × 10-27 kg. What is the sum of the forces exerted on the proton?

What will be an ideal response?

Physics & Space Science