I nd Hel Please? Which type of friction prevents a pile of rocks from falling apart?

rolling friction

static friction

cohesive friction

kinetic friction

If steel is more dense that lake water, why can a boat float

Juliette sets the initial velocity to +10 m/s, the acceleration to zero, and clicks “start.” how can shakina describe the subsequent motion of the car juliette controls?

The brightest star in the night sky in the northern hemisphere is sirius. its distance from earth is estimated to be 8.7 light years. a light year is the distance light travels in one year. light travels at a speed of 3.00 × 108 m/s. calculate the distance from earth to sirius in miles. (1 mi = 5280 ft) g