4x + 7y = - 23

8x + 5y = - 1

The net force acting on an object in the horizontal direction is 25 newtons, and the force acting in the vertical direction is 18 newtons. Find the angle from the horizontal in which the force is acting. 36° 0.37° 70° 81

Which has more momentum? A paper airplane with a mass of 10g flying at a velocity of 4m/s or a real airplane that is parked at a runway with a mass of 1000kg and a velocity of 0m/s

If two forces act on an object and the forces are balanced, then the object experiences no net force. true false

An aluminum cup of mass 250 g contains 800 g of water in thermal equilibrium at 80.0°C. The combination of cup and water is cooled uniformly so that the temperature decreases by 1.50°C per minute.

If a positively charged particle moves into a magnetic field traveling in a straight line, how would you expect it's motion to change

Ursa Minor contains the pole star, Polaris, and the asterism known as the Little Dipper. From most locations in the Northern Hemisphere, all of the stars in Ursa Minor are circumpolar.

What is an organism ability to maintain a steady internal condition called

What is the fundamental frequency of a particular medium?. a. the lowest frequency at which a standing wave is possible. b. the highest frequency at which s standing wave is possible

The distance from the inner core to the surface of the earth is about 5,200 kilometers. the large amount of material surrounding the inner core places tremendous pressure on it.

What type of wave is sound? longitudinal light surface transversal