You lift a 25-kg child 0.80 m, slowly carry him 10 m to the playroom, and finally set him back down 0.80 m onto the playroom floor.
What work do you do when slowly carry him 10 m to the playroom?
Express your answer to two significant figures and include the appropriate units.
You lift a 25-kg child 0.80 m, slowly carry him 10 m to the playroom, and...
A 25 kg child goes down a straight slide inclined 38 degrees above horizontal. The child is acted on by his weight, the normal force from the slide, and kinetic friction.How large is the normal force of the slide on the child?Express your answer to two significant figures and include the appropriate units.
A 360 kg piano slides 2.5 m down a 25 ∘ incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure(Figure 1)). Ignore friction. A:Determine the force exerted by the man. Express your answer to two significant figures and include the appropriate units. B:Determine the work done on the piano by the man. Express your answer to two significant figures and include the appropriate units. C:Determine the work...
A 10 g bullet traveling at 430 m/s strikes a 14 kg , 0.80-m-wide door at the edge opposite the hinge. The bullet embeds itself in the door, causing the door to swing open. What is the angular velocity of the door just after impact? Express your answer to two significant figures and include the appropriate units.
A 1.5 kg book is lying on a 0.80 m -high table. You pick it up and place it on a bookshelf 2.3 m above the floor. Part A During this process, how much work does gravity do on the book? Express your answer with the appropriate units. Wg = Part B During this process, how much work does your hand do on the book? Express your answer with the appropriate units. Wh =
Marissa drags a 25 kg duffel bag 11 m across the gym floor. If the coefficient of kinetic friction between the floor and bag is 0.15, how much thermal energy does Marissa create? Express your answer to two significant figures and include the appropriate units.
Marissa drags a 25 kg duffel bag 13 m across the gym floor. If the coefficient of kinetic friction between the floor and bag is 0.15, how much thermal energy does Marissa create? Express your answer to two significant figures and include the appropriate units.
A 20 kg child is on a swing that hangs from 2.0-m-long chains. You may want to review (Pages 234 - 238) . What is her maximum speed if she swings out to a 42 ∘ angle? Express your answer to two significant figures and include the appropriate units.
How long will it take a 3000-W motor to lift a 405-kg piano to a sixth-story window 19.0 m above? Express your answer to three significant figures and include the appropriate units.
Part A A 2.0 kg book is lying on a 0.72 m -high table. You pick it up and place it on a bookshelf 2.0 m above the floor. During this process, how much work does gravity do on the book? Express your answer to two significant figures and include the appropriate units. W, = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 9 attempts remaining Part B During this process, how much work does your hand...
Part A You need 300. mL of a 10. % (m/v) glucose solution. If you have a 25% (m/v) glucose solution on hand, how many milliliters do you need? Express your answer to two significant figures and include the appropriate units. V: Value Units Submit Request Answer