Springs 1 and 2 are identical. What is the mass of the unknown block, in kg? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. 100 g 10 20 3 Ô

A trough is 5 meters long, 1.5 meters wide, and 1 meters deep. The vertical cross-section of the trough parallel to an end is shaped like an isoceles triangle (with height 1 meters, and base, on top, of length 1.5 meters). The kg trough is full of water (density 1000- ). Find the amount of work in m3 joules required to empty the trough by pumping the water over the top. (Note: Use g = 9.8 as the acceleration due to gravity.) s2 5m 1.5m 1m

Question 10) Sasha pushes a 15 kg cart full of donated books through a 5.0 m fong starting area. The cart is then released and must reach the top of the hill 2.5 m in height, as shown in the diagram below, He must apply enough force on the cart so that the cart is able to travel along the 80 m path and reach the top of the hill. The force of Tnction between the 8.0 m path and the cart is 11.0 N. What minimum force on the cart in the starting area is required to get it to the top of the hill? Stopping point 8.0 m 2.5 m Mass = 15 kg 5.0 m Starting area terW

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Question 10) Sasha pushes a 15 kg cart full of donated books through a 5.0 m Tong starting area. The cart is then released and must reach the top of the hill 2.5 m in neight, as shown in the diagram below. He must apply enough force on the cart so that the cart is able to travel along the 8.0 m path and reach the top of the hill. The force of friction between the 8.0 m path and the cart is 11.0 N. What minimum force on the cart in the starting area is required to get it to the top of the hill?

SI 1. You raise a bucket of water from the bottom of a deep well. If your power output is 113 W, and the mass of the bucket and the water in it is 5.00 kg, with what speed can you raise the bucket? Ignore the weight of the rope. m/s ssfol ƒ60 s £60 ssfo f60 ssfu

1) You run forward, pulling a sled behind you with a force of 250 N. If you expend 2,500 Joules, how many meters did you run? Answer w/

.  You use 40 J of energy to rise a  250 N object. How far high did you lift it?

Problem 2: A certain spring has a spring constant k₁ = 660 N/m as the spring is stretched from x = 0 to x1 = 35 cm. The spring constant then changes to k₂ = 250 N/m as the spring is stretched to x2= 65 cm. From x₂= 65 cm to x3 = 89 cm the spring force is constant at F3 = 105 N.

A tank is full of water. Find the work (in J) required to pump the water out of the spout. (Use 9.8 m/s? for g. Use 1,000 kg/m³ as the density of water. Round your answer to the nearest whole number.) 3 m 9 m