A firecracker is thrown into the air. At the height of its trajectory it explodes into two pieces. One piece has a mass of 190.1 g and flies off along the x-axis with a speed of 98.7 m/s. The second piece has a mass of 238.2 g and flies off along the y-axis with a speed of 31.2 m/s. What is the magnitude of the momentum just before the explosion

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Marcella is a four-year-old girl who is a victim of emotional child abuse. based on the child and family services improvement and innovation act of 2011, which action should the government take for marcella? a. the state should arrest marcella’s abuser. b. the state should find a home for marcella as soon as possible. c. the state should enforce stricter laws in the area where marcella resides. d. the state should provide medical assistance to marcella.

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?