In a european country a bathroom scale displays its reading in kilograms. when a man stands on this scale, it reads 98.9 kg. when he pulls down on a chin-up bar installed over the scale, the reading decreases to 82.2 kg. what is the magnitude of the force he exerts on the chin-up bar?

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

The dot diagram represents the motion of the motorcycle as it moves from left to right