There is a satellite of mass m in an orbit radius R about a planet with mass M.

a. What is the sum of the kinetic energy and the gravitational potential energy of the satellite?

b. What is the energy required for the satellite to escape the planet's gravity?

RLC Circuit/critical damping.

Methodology for critical resistance measurements. What is the random error
associated with the uncertainty of this measurement? How can it be accounted
for ?

What you havehere is a deacde box that varies the ressitance in a circuit.

A box of mass 1kg is placed on a vertical spring (k=1000N/m) and pushed down so that the spring is compressed by 0.3m from the unstretched length. When the spring is released, what is the maximum height above the initial position (when the spring is compressed) the box rises?

A window washer on a scaffold hoists the scaffold up the side of a building by pulling down on a rope that runs over a pulley and connects back to the top of the scaffold. The combined mass of the worker and the scaffold is 100kg, and the washer pulls on the rope with a force of 800N. What is the acceleration of the scaffold?

Throughout history, research in the physical sciences has often been limited by our abilitiesof safely observing and studying the very phenomenon in question. As we make technological progress, we have increasingly more tools to expand our observational capabilities. Write a three to five (3-5) page paper in which you: Part 1: Procedures in the Physical Sciences: Challenges in Measurements Identify three (3) specific challenges to making direct measurements in the fields of astronomy, chemistry, physics, or earth science. Describe how scientists have utilized indirect forms of measure to overcome these challenges. Choose two (2) of the most historically influential tools or techniques in the physical sciences. Explain how these techniques or tools work, and how they helped to advance our understanding of the physical sciences. Part 2: Procedures in the Physical Sciences: A Survey of Safety Choose one (1) hazard associated with research in the physical sciences. Discuss how protective gear or equipment might be used to mitigate the hazard, as well as its efficacy. Describe the ways in which advancements in the physical sciences might impact the safety of the global community. Assess any special considerations for regulating this research. Part 3: Documentation Use at least four (4) quality resources in this assignment. Note: Wikipedia and similar Websites do not qualify as quality resources. The body of the paper must have in-text citations that correspond to the references. Integrate all sources into your paper using proper techniques of quoting, paraphrasing and summarizing, along with proper use of in-text citations to credit your sources.

13a. For an object's mechanical energy to be conserved, what condition must be satisified? Group of answer choices There is no fore acting on the object. There is no friction force acting on the object There is only conservative forces acting on the object. There is only conservative forces doing work on the object.

b.The SI unit of the spring constant k is _________. (You may need to check your textbook for the answer.) Group of answer choices N N/m J/m J

c. Is the following statement true or false? The SI unit of kinetic energy and potential energy is the same. Group of answer choices True False

d. Is the following statement true or false? A spring stretched by 5cm stores the same potential energy as the spring compressed by 5cm. Group of answer choices True False

e. Which of the following is a conservative force? Group of answer choices Frictional force. Tension force in a rope Normal force Spring force

In Victor Hugo’s novel

les Miserables, the main character Jean Valjean, an escaped prisoner, was

noted for his ability to climb up the corner formed by the intersection of two vertical perpendicular

walls. Find the minimum force with which he had to push on the wall while climbing. What is the

minimum coefficient of static friction required for him to be able to perform such a feat?

NOTE: My teacher says that the solution is not simply using the friction to counteract the gravity to push on him, Jean Valjean has his arms straight out to his sides (180 degrees) with one on each wall, and his pushing on the wall must be factored in.

Solid mercury with a mass of .800kg and a temp of -40.0 degrees C is placed on top of a block of copper with a mass of 1.00 kg and a temp of -10.0 degrees C.

Determine the temperature and phase of each substance when equilibrium is reached, assuming the system is thermally isolated. Also, assume the specific heat of solid and liquid mercury are the same.

When a small electrical signal must travel a distance, a shield cable is used in which the signal wire is surrounded by an insulator and the enclosed by a cylindrical conductor that carries a return current. What is the advantage of this coaxial cable design?  

For each scenario, draw the ray diagram (roughly to scale) and show your math, including original equations used. Label all values, including: s, s' , h, h' , f.

• Using a 5 cm tall object and a +10 cm lens, create a real image that is half the height of the object.

• Using a 5 cm tall object and a +10 cm lens, create a virtual image that is twice the height of the object.

1) Make a sketch of an object whose center of gravity is not located on the object itself. This a

Young David who slew Goliath experimented with slings before tackling the giant. He found that he could revolve a sling of length 0.700 m at the rate of 6.00 rev/s. If he increased the length to 1.000 m, he could revolve the sling only 4.00 times per second.

(a) What is the speed of the stone for each rate of rotation?
m/s at 6.00 rev/s?______
m/s at 4.00 rev/s?______

(b) What is the centripetal acceleration of the stone at 6.00 rev/s?
m/s^2?______

(c) What is the centripetal acceleration at 4.00 rev/s?
m/s^2?______

For oxygen gas, the van der Waals equation of state achieves its best fit for a=0.14 N⋅m^4/mol^2 and b=3.2×10^(−5) m^3/mol

1.Determine the pressure in 2.0 mol of the gas at 10 ∘C if its volume is 0.24 L , calculated using the van der Waals equation.

2. Determine the pressure in 2.0 mol of the gas at 10 ∘C if its volume is 0.24 L , calculated using the ideal gas law.

A.) A challenge gaining prominence throughout the planet is the increased need for "green" or sustainable energy. In certain parts of the country, wind farms are a viable alternative to conventional energy sources. An average wind turbine, the device which converts rotational motion to electricity, has a maximum capacity of 1.80 MW1.80 MW . However, the wind turbine realistically never runs at full power. If a wind turbine runs at 26.4%26.4% capacity for 1.00 year1.00 year , how much energy does the wind turbine generate?

E=______kWh

B.)

Suppose that the average U.S. household uses 14100 kWh (kilowatt‑hours) of energy in a year. If the average rate of energy consumed by the house was instead diverted to lift a 2020 kg car10.8 m into the air, how long would it take?

car:________s

Using the same rate of energy consumption, how long would it take to lift a loaded Boeing 747 airplane, with a mass of 4.15×105 kg , to a cruising altitude of 9.67 km ?

airplane:______S

The box moves at a constant speed. If the mass of the box is 6.4 kg, it is pushed 3.6 m vertically upward, the coefficient of friction is 0.35, and the angle θ is 30.0°, determine the following. (a) the work done (in J) on the box by F (b) the work done (in J) on the box by the force of gravity J (c) the work done (in J) on the box by the normal force J (d) the increase in gravitational potential energy (in J) of the system of the box and earth as the box moves up the wall