What's More Let's Work it Out Direction: Using the Physics concepts, determine if Work is done in the following cases. Justify your answer. Is there Work Done? FBD (include the displacement) (Yes/No) Scenario Justification 1. You go up a flight of stairs 2. You tug a stubborn carabao which refuses to budge 3. A ripe mango falls from the tree 4. You pushed against an immovable concrete wall for 5 minutes 5. You push your classmate on a swing

The two ropes shown in the bird's-eye view of the figure are used to drag a crate 5.8 m across the floor. How much work is done by the force fk→?Express your answer with the appropriate units. How much work is done by the force T1→?Express your answer with the appropriate units. How much work is done by the force T2→?Express your answer with the appropriate units.

Several physical situations are described below. For each situation, simplify the work-energy equation by canceling any zero terms and any energy terms (whether KE or PE) which are unchanging. Explain each term which gets canceled. A cross-country skier is in motion on top of a small hill. He skis down the hill into the valley and up a second smaller hill. He uses his poles to propel himself during the entire motion. Ignore the effect of friction and air resistance. Simplification of Work-Energy Equation KEi + PEi + Wnc = KEf + PEf

A 700 kgkg elevator accelerates upward at 1.4 m/s2m/s2 for 14 mm, starting from rest. A. How much work does gravity do on the elevator? Express your answer with the appropriate units. B. How much work does the tension in the elevator cable do on the elevator? Express your answer with the appropriate units. C.What is the elevator's kinetic energy after traveling 14 mm? Express your answer with the appropriate units.

Coulomb’s law tells us that the electrostatic force between two charged objects can be calculated by: ?= ??1?2/?^2Where k is a constant with a value of 8.99x109 Nm2/C2; ?1 and ?2 are the charges of the two particles (1.602x10-19 C), and r is the distance between the two particles. The force is attractive if the charges of the two particles is opposite (one’s positive and one’s negative) and repulsive if the charges have the same charge (both positive or both negative). Calculate the electrostatic force on proton #1 from the other two protons.Will the gravitational force between the protons be attractive or repulsive? What about the electrostatic force? Which has the larger magnitude, the electrostatic force or the gravitational force? Can the electrostatic and gravitational forces alone create a stable Lithium nucleus?

1. Calculate the work done on the suitcase by  F→. Express your answer with the appropriate units. 2. Calculate the work done on the suitcase by the gravitational force. Express your answer with the appropriate units. 3.Calculate the work done on the suitcase by the normal force. Express your answer with the appropriate units. 4. Calculate the work done on the suitcase by the friction force. Express your answer with the appropriate units. 5. Calculate the total work done on the suitcase. Express your answer with the appropriate units. 6. If the speed of the suitcase is zero at the bottom of the ramp, what is its speed after it has traveled 3.90 mm along the ramp? Express your answer with the appropriate units.

A system of two objects has AKtot = 7 J and AUint = -4 J. Part A How much work is done by interaction forces? Express your answer in joules. IVE ΑΣΦ Wint = Submit Part B How much work is done by external forces? Express your answer in joules. V—| ΑΣΦ Wext= = Request Answer Submit Request Answer ? ? J J

1. A box of mass m,, initially at rest, is acted on by a single position and time-dependent force y F(x) = Fo sin(b?t) £ + Fo e Viŷ with b, Fo, y, constants. a. Determine the units of the constant b, F., and y1. b. Assuming your system is the book, find the work done by this force on the book as it moves from 7 = õ to i; = xf& + Y1ŷ.

I want the correct answer with explanation

ACTIVITY 4: DECODE THE MESSAGE Directions: Determine the work done by the force on a given system in the following problems. Then, decode the message. I hv a e 4 Displacement (m E You pull your bag with a force of 30 N parallel to the ground classroom 20 m away. How much work will you do on your bag? MA crate is being lifted into a truck. If it is moved with a 2470 N force and 3650 J of work is done, then how far is the crate being lifted? M You must exert a force of 4.5 N on a book to slide it across a table. If you do 2.7 J of work in the process, how far have you moved the book? towards your