a) What is the typical efficiency of a car? b) What is the maximum possible efficiency (Carnot efficiency) if the heat in the car's engine reaches 500 C and the exhaust is expelled at 50 C? c) What must happen in order to reach 100% efficiency with a car engine?

Q: Two charged metal spheres are connected by a thin conducting wire, as shown. R1 Which of the stateme...

A: given two metal spheres connected by a conducting wire and then some statements are given and we hav...

Q: What is the frequency of motion of a 2.0 m long pendulum? O 1:3 Hz O 0.35 Hz O 0.61 Hz O 2.84 Hz

A: Length of pendulum L = 2.0 m

Q: What is the orbital speed at the disk's outer edge in kilometers per second if a protostellar disk i...

A:

Q: 36. If the basic metabolic rate of the human body is 60 (food) calories per hour. A) How much energy...

A:

Q: Find the electric field at a distance from a linear plus charge with a constant linear charge densit...

A: We can solve the problem using Gauss's Law. It is given by  ∯E⇀.da⇀=Qenclosedε0

Q: A small circular hole 6.00 mm in diameter is cut in the side of a large water tank, 14.0 m below the...

A:

Q: 8. A disk initially rotates counterclockwise at 1 rad/s, but has a counterclockwise angular accelera...

A:

Q: a. A metal rod with initial temperature 200°F is brought outside where the temperature is 60°F. Afte...

A: Giveninitial temperature T0=200°Fsurrounding temperature Ts=60°Fafter t=2min, T=120°F

Q: A positive point charge Q is fixed on a very large horizontal frictionless tabletop. A second positi...

A: Given: Two positive charges Q and q. Introduction: The force of attraction or repulsion between two ...

Q: 1. A block of mass M-10 kg is connected to another block of mass m=5 kg via cylindrical pully of mas...

A: Draw the free body diagram of the system and then apply the Newton's second law of motion for the ma...

Q: The value of Roo is given inside the front cover and is 109 737 cm-1 What is the energy of the groun...

A:

Q: Use the data below to answer the scaffold questions. t=1.0 s d=1.0 m O Distance traveled by the obje...

A:

Q: In an oscilating RCL Ciruit with C=74HF.,R=32and 1=20mH How lmuch time lin mili secons) elapsee befo...

A: Given: Capacitor,C=7.4μF=7.4×10-6FResistance,R=3ΩInductance,L=20mH=20×10-3H An LCR circuit, also kno...

Q: A car starts from rest with an acceleration of 4.6 m/s2 which decreases linearly with time to zero i...

A: We will find the equation of the acceleration and then we will find the distance travelled in first ...

Q: In the picture below, disk 2 rotates about a frictionless, vertical axle with angular speed wi. Then...

A:

Q: A spring which has an elastic potential energy of 45.0 J and a force constant of 175.50 N/m has been...

A: The problem is based upon the concept of potential energy of a spring. To solve the given problem we...

Q: A woman enters a revolving door on the right, pushing with 425 N of force directed perpendicular to ...

A: Concept: Torque is a force that can cause an object to rotate around an axis. Torqueτ=Force×radius F...

Q: agnostic x-ray

A: Photoelectric effect: The PE effect is one of the prominent ways of interaction of x-ray with matter...

Q: A placekicker kicks a football upward at an angle of 20° and a speed of 5.0 m/s. At what other angle...

A: angle θ = 20o Initial speed u = 5.0 m/s

Q: How far above the Earth's surface must a satellite be located if it is to circle the Earth in a time...

A:

Q: Describe five (5) uses of hall effects.

A: The five uses of HALL EFFECT are: Hall effect is the production of potential difference across an el...

Q: For the below circuit, what is the equivalent (total) resistance, Req? Pick the closest answer. + V2...

A:

Q: object of m = 100 kg rolls along a horizontal surface of negligible frict . Another object, 250 kg i...

A:

Q: A particle of mass m is moving in a vertical circle of radius R. When m is at the lowest position, i...

A: Given: The initial velocity of the particle of mass m at the lowest position is vi = 0.89445gR

Q: If the weight of a body immersed in a fluid exceeds the buoyant force then the body will rise until ...

A: The buoyant force is the resultant force on the body exerted by the fluid. If the weight of the body...

Q: In Melde's experiment, the number of loops on a string changes from 7 to 5 by the addition of o.015 ...

A: For the string used in Melde's experiment, we have the relation p2T=constantor ,p12T1=p22T2p=number ...

Q: cted to a 15 kHz oscillator. O mA when the rms voltage

A: Given as, Current= 70mA, frequency= 15 kHz, rms voltage= 6.0V.

Q: Suppose that a mineral body formed in an ancient cataclysm, perhaps the formation of the earth itsel...

A: The half-life if uranium-238 is given as, T1/2=4.51×109 years. The ratio of NtNo-Nt is given as, NtN...

Q: Describe five (5) uses of hall effects.

A: Introduction: This question explains about the five uses of hall effects

Q: Q51: Life In The Cosmos a) Discuss how scientists have determined the probability of meteor impacts ...

A: Meteors are small bodies of matter that enter Earth's atmosphere from outer space. Once they enter E...

Q: The switch in the figure is closed at t=0, when the current is zero. When i =43 mA, what is the magn...

A:

Q: An electron is in the presence of a uniform electric field and its initial position is at point A. T...

A: The initial position of electron = At point A The final position of electron = At point B Electric f...

Q: Define, just ify, and provide examples of zero-point energy.

A: The problem is based upon the quantum mechanical zero-point energy. The quantum mechanical zero-poin...

Q: An RLC circuit is connected to an AC source given by Av (170 V) sin(500t). If R = 120 N and L = 6.4 ...

A: RLC circuit.

Q: If the thickness of the Earth's shadow through which the moon passes is 5,700 miles, its diameter is...

A:

Q: Describe five (5) uses of hall effects.

A: Introduction: This question deals with the uses of five hall effects.

Q: 1.) A 30N force acts at a 40° angle from the horizontal on a 30kg block at rest on a perfectly smoot...

A: Given, F=30 Nθ=400m=30 kgd=7.2 m

Q: n the circuit below, each resistor has the same resistance, R. If the equivalent current in the circ...

A:

Q: How far above the Earth's surface must a satellite be located if it is to circle the Earth in a time...

A: Given, Time period is 28 hours

Q: On the ceiling, a spring is attached with a 3 kg mass to the other end. Here on earth, the displacem...

A: Given that, Mass, m=3 kg Length stretched, x=0.15m Acceleration due to gravity on mars, amars=3.71 m...

Q: An inductor is connected to a 15 kHz oscillator. The peak current is 70 mA when the rms voltage is 6...

A: Given, frequency f = 15 kHz = 15 × 103 Hz            Peak current Im = 70 mA = 70 × 10-3 A          ...

Q: Mr. Spock was floating at distance of 2.25 x10* m from earth, suddenly an anidentified spacecraft wa...

A: Given,R1=2.25×108mmass of Earth ME=5.97×1024kgMass of Spacecraft M=9.30×1022 kgmass of Mr. Spock=82k...

Q: Santa Clause is about to distribute his gifts, but his reindeer Rudolph is still sleepy. So, instead...

A:

Q: 1. Using the truth table given below. Make the K map and obtain the simplified SOP expression. F 1 1...

A: The problem is based upon K-map in digital electronics. The solution for the given table is as follo...

Q: Most of us have an electric heater at home. Electric heaters operate at 1500 W (1.5 kW) which means ...

A: The cost of 1 kWh is 25 cents = 0.25 dollars Electric heaters operate at 1500 W power. Let's conside...

Q: Question 2: Calculate Debay radius, plasma frequency, and plasma coefficient of the Tokmac plasma st...

A: Plasma is the fourth state of matter after the well-known solid, liquid, and gas. It is defined as i...

Q: Four capacitors, all with capacitance C, are connected in series as shown in Figure C. What is th eq...

A: Given that: Four capacitors are connected in series.  

Q: Consider a simple harmonic oscillator with w = 3 x 10+* Hz. At a temperature of 321 K, what is the a...

A:

Q: 5. The expression developed in class for the magnetic vector potential is A(r. ) = av. He J(r,) 47 r...

A: The magnetic vector potential is a vector field that functions as the magnetic field's potential. Th...

Q: A person riding a bike at 15 mph is in an accident. They are wearing a helmet. How does the padding ...

A: On the outside, a helmet has a strong plastic shell, while on the inside, it contains foam. If you c...