As shown in the figure below, Mary is standing 95 feet from the base of a leaning tree. The tree is growing at an angle of 80° with respect to the ground. The angle of elevation from where Mary is standing to the top of the tree is 47°. Find the length, x, of the tree. Round your answer to the nearest tenth of a foot. | feet 47° 80° -95 ft

Q: What net force, in Newtons, is needed to do 1,847 J of work over a distance of 144 meters?   Round…

A: Given thatwork, W=1847 Jdistance, d=144 mas work, W=Fdwhere F is force

Q: How much work is done in carrying a 2 kg book 2 m above the ground

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Q: The 85 kg man pushes against a stationary wall with a force of 250 N for 30 seconds. How much work…

A: Work is basically the dot product between the force and the displacement of the object. The formula…

Q: How can Work, energy and Power of the Human Body be applied in health sciences?

A: We know that the energy is a quantity that changes it state, and this energy is further used to do…

Q: Calculate the work done when a force of 5 N moves a book 1.2 m. (Remember that 1 N?m 5 1 J.)

A:

Q: Does the work you do on a book when you lift it onto a shelf depend on the path taken? On the time…

A: Work done

Q: What would be the power output (in-hp) of a 1750kg car if it can acend to the top of a 285m high…

A: The expression of work- energy theorem,

Q: Question What will be the potential energy of a body of mass 5 kg kept at a height of 10 m ?

A: Given data, Mass of the body, m = 5 kg. Height h = 10 m. Acceleration due to gravity g=9.8 m/s2

Q: Two people climb up the same ladder in 25 seconds. The person with the mass will have more power. 1)…

A: Given,  Two people climb up the same ladder in 25 sec. We need to find,  Mass relation with power…

Q: A box with a max of 20 KG at 5m is lifted to 20 m how much work was done? (Used=changed in PE

A: The distance moved by the box is h=20-5m=15m

Q: How much work is required to raise a child of mass 35 kg up to 1.5 meters high? answer should be in…

A: Given  Mass (m) = 35 kg  Height(h) = 1.5 m    Required energy will be equal to the increase in…

Q: if you do 20 J of work lifting a rock weighing 30 N, how far will you lift it?

A: Write the given values with the suitable variables. W=20 JP=30 N Here, W is the required work and P…

Q: Choose the BEST answer to the following: The power required to raise a 100-kg crate a vertical…

A: Given:Mass=100kgvertical distance =2mTime=4s

Q: Two rocks with masses 10 kg and 20 kg are dropped from a height of 20m above the ground. Answer all…

A: Masses are as follows: Height = h = 20 m Par 1. Both rocks are in free fall therefore the…

Q: Why is it that the work done in holding a bag w above the floor is 0?

A: GivenF=1 N1 m above the floor

Q: What is the difference between work and energy?

A: Introduction: Work is the transferring of some amount of energy with the help of force.

Q: Show that 2.4 J of work is done when a force of 2.0 N moves a book 1.2 m.

A: Work done = Force x Distance moved by the force = Fd W = 2.0 N x 1.2 m W = 2.4 N.m = 2.4 J

Q: In the absence of air resistance, a ball thrown vertically upward with a certain initial KE will…

A: When air resistance is a factor affecting the ball, it will return to its original level with the…

Q: Ten and one-half foot-pounds of work is required to compress a spring 6 inches from its natural…

A:

Q: How much power does it take a steam engine to do 6.8 × 10' J of work in 2.61 x 10° seconds? (answer…

A: Given data:  Work (W) = 6.8×107 J Time (t) = 2.61×108 s Required: Power (P)

Q: If a runner exerts 350 J of work to make 150 W of power, then how long did it take the runner to do…

A:

Q: A motionless object could have (a) speed. (b) kinctic energy. (C) elastic energy. d) all of these.…

A: The amount of energy is required for any object to move from one place to another or heat up.

Q: A crane lifts a car from the ground to the parking lot of the mansion. Is the work done more, less,…

A: Work done by crane will be: W=F→.s→ Here F=force applied by crane which is equal to weight of car=mg…

Q: Choose the BEST answer to the following: A model car with 3 times as much speed as another has a…

A: Write the expression for kinetic energy.

Q: What is the efficiency of the machine that miraculously converts all the input energy to useful…

A: GivenInput energy = Output useful energy

Q: How do I calculate the power of an object of mass 50kg that was moved upward at an inclination of 15…

A:

Q: If a man pushes with a 10N in a distance of 25m in 60 seconds how much power did he use

A: Given, Force (F) = 10N Distance (d) = 25m Time (t) = 60 Second  Power (p) = ?

Q: If you are running with speed of 6 m/s and your weight is 800 N. Find out (a) your mass, (b) your…

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Q: If you push a car with a force of 600 N on a level driveway for 15 m, how much work do you do on…

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Q: A 20-foot chain weighing 5 pounds per foot is lying coiled on the ground. How much work is required…

A: