A certain coal-fired power plant has a rated power capacity of P = 1350 MW. The output of this plant is W = 0.34QH, where QH is the energy input as heat from the hot reservoir. Part (a)  Write an equation for the efficiency of a heat engine in terms of QH and the heat QC exhausted to a low temperature reservoir.  Part (b)  Which would increase the efficiency more, doubling QH or reducing QC by half?  Part (c)  Calculate the maximum thermal efficiency of the power

Q: 13) Consider the following potential between two atoms, given as a function of the center-to- Center…

A: givenEtotal=-0.5×10-21 Jat maximum separation . all energy will be stored as potential energy

Q: Forces of 60 N at 170 degrees, and 40 N at an angle of 220 degrees, measured counter-clockwise from…

A:

Q: Galaxy A is measured to have a smaller cosmological redshift than Galaxy B. Which galaxy is farther…

A: Redshift: It is stated as the change in the frequency of the light and is used to study the position…

Q: A 2.00-g lead bullet at 24.0°C is fired at a speed of 190 m/s into a large block of ice at 0°C, in…

A:

Q: A horizontal 810-N merry-go-round of radius 1.20 m is started from rest by a constant horizontal…

A: here we will use the concept of torque  A horizontal force apply a torque and due to this ,,merry go…

Q: A 240 g air-track glider is attached to a spring. The glider is pushed in 9.60 cm and released. A…

A:

Q: Consider the following figure. (The x axis is marked in increments of 2 m³.) P (Pa) 6 x 106 4 X 106…

A:

Q: Jared and Clay are climbing the stairs. Jared gets tired and stops halfway to the fourth floor. Clay…

A: Given: Jared stops halfway to the fourth floor             Clay makes it to the fourth floor…

Q: 3) A small sphere has radius 2cm and mas 60g. It is suspended at Constand 14 w/m! Find how much the…

A:

Q: 7) A piece of ice at 0°C starts at rest at the top of a ramp and slides down. At the bottom of the…

A: given : the ice's kinetic energy at the bottom of the ramp is lesser than its potential energy at…

Q: A particle is subject to the following velocity: Ux 122.0t 0.2t³ over a time period of t = [0,10]…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: ball is thrown from a height of 0 m so that it lands back on the field at a distance of 24 m from…

A:

Q: As a jet plane takes off, at 5.0 m the sound wave intensity is 100 W/m². An observer stands 120 m…

A: The given data we have: Sound intensity at 5 m from the plane: 100 W/m2 The objective is to…

Q: A diffraction grating has 300 lines per mm. If light of frequency 4.76 × 1014 Hz is sent through…

A:

Q: stinguish between the use of G and g. s, Isaac Newton proposed a rule to quantify the known as…

A:

Q: The wavelength of an electromagnetic wave is measured to be 6.80 10-7 m (a) What is the frequency of…

A: Given,  Wavelength = 6.8 ×10^(-7) m We need to find,  Frequency =?

Q: The figure shows a golf ball passing through a windmill at a miniature golf course. The windmill has…

A:

Q: 3. A bullet is fired at an initial velocity of 120m/s and an angle of 54° at the top of a 120m tall…

A: Given data- A bullet is fired at an initial velocity, u=120 m/s At an angle, θ=54° Height of…

Q: The index of refraction of the core of a piece of fiber optic cable is 1.72. If the index of the…

A:

Q: Tegan, a trapeze artist swings from a 2.5 m long trapeze, high above the tree ring circus. What is…

A: Given L=2.5 mformula for time period isT=2πLg

Q: A ball is fired vertically upwards at a speed of 45 m/s. construct a chart/table showing the height…

A:

Q: A large steam pipe is covered with a 4.80 cm thick insulating material with a thermal conductivity…

A:

Q: Two identical R = 5.74 ohm light bulbs are is series circuit with a 15.7 volt battery. What is the…

A:

Q: A concave mirror has a focal length of 20 cm. What is the position (in cm) of the object if the…

A:

Q: Calculate the total gravitational force (magnitude and direction) acting on each of the three masses…

A:

Q: A laser emits a beam of monochromatic light with frequency 5.62 x 10^14 Hz. What color is the laser…

A: Given data:  Frequency of light (f) = 5.62×1014 Hz Required: The color of the laser beam

Q: What is the speed of a cheetah if it travels 300 meters in 50 seconds? Be sure to show your work and…

A: Given data:  Distance (d) = 300 m Time (t) = 50 s Required: The speed (v)

Q: Part I - Matching - match each option with the type(s) of active energy it has 1. A moving car 2. A…

A: 1. A moving car has - Kinetic energy 2. A stretched rubber band -possess potential energy get…

Q: RC-circuit. Model the RC-circuit in the figure below. Find the current due to a constant E. NOTE:…

A:

Q: Solve the time independent Schrodinger equation for a particle with mass m and energy 0 < E < V1 for…

A:

Q: How far will an object move in 40 seconds if it's speed is 20 m/s? Be sure to show your work and…

A:

Q: A particle moves in a straight line according to the v-t curve shown. What is the acceleration, in…

A:

Q: A cylinder is closed by a piston connected to a spring of constant 2.30 x 103 N/m. With the spring…

A:

Q: Three resistors with resistances R1 = 0.91 ohm, R2 = 6.06 ohm, and R3 = 8.05 ohm are is series…

A: Given data:  R1= 0.91 Ω, R2 = 6.06 Ω and R3 = 8.05 Ω Battery voltage (V)  = 14 V Required: The…

Q: 20. The figure shows a rod that is forced to move at constant speed v = 2.0 m/s along the horizontal…

A: length = L = 10 cm = 0.1 m magnetic field = B = 0.8 T Current = i = 10 mA

Q: Learning Goal: To find some of the parameters characterizing an object moving in a circular orbit.…

A:

Q: You want to land a boat 30m downstream on the opposite bank of a 30m wide river and you want the…

A:

Q: One mole of an ideal gas does 3050 J of work on its surroundings as it expands isothermally to a…

A:

Q: Find the energy required to change a 10-gram ice at 0OC from solid to become liquid at 0OC.

A: Given mass of ice = 10 gram Initial temperature = final temperature = 0 °C We have to find the…

Q: 4. Consider a uniform line of charge of length L = 40 cm. If the electric potential at point P…

A:

Q: fem's • by a motor that provides 2) 8.5m of of a at rest, the wiced from the cented wheel an angular…

A: Givenr = 8.5  mω0= 0α = 0.025 rad/s2I = 7.8 ×105 kg m2t = 30 sec

Q: Find the energy required to change a 10-gram water at 100OC from liquid to become vapor at 100OC

A:

Q: Three resistors with resistances R1 = 3.2 ohm, R2 = 5.23 ohm, and R3 = 9.45 ohm are is parallel…

A: Given data: Three resistors are connected in parallel combination  R1 = 3.2 Ω, R2 = 5.23 Ω and R3 =…

Q: The specific heat of soil is 0.20 cal/(g.°C) and the specific heat of water is 1.00 cal/(g.°C). If…

A:

Q: esistance of 3.5 ohm is placed on the horizontal surface of a table top between the poles of a…

A:

Q: Kild apart. Which one of the following is a characteristic of a compound microscope? a. The…

A: Compound microscope is a combination of objective and eyepiece. It's magnification is more than that…

Q: The deepest point known in any of the Earth's oceans is 10.92 km deep. What is the pressure at this…

A: We know that  pressure= ρgh  where ρ is the density , g is the acceleration due to gravity and h is…

Q: Consider a star for which the stellar power per unit area at distance 1 AU from the star is 3.7…

A: Write the expression for the radiated power at the surface of the star. P=σAT4P=σ(4πR2)T4 Here, σis…

Q: Given a Fahrenheit temperature reading of 75 °F, the reading on the Kelvin scale is

A:

Q: A highly non-ideal gas has an entropy given by S=aNU/V, where the internal  energy, U is a function…

A: A highly non-ideal gas has an entropy given by S=aNUV, Where the internal energy, U, is a function…