a state highway patrol car radar unit uses a frequency of 9.00*10^9 Hz. What frequency difference will the unit detect from a car approaching a parked patrol car with a speed of 28.6m/s?

Q: Calculate the amount of work done if a 300 N object is lifted to a height of 2.5 m.

A: Given that Weight of object F = 300 N Height h = 2.5 m

Q: About how many cups of coffee you make with 569,600 J of energy

A: It depends on room temperature, let room temperature is 22 degree celsius. H=mc∆T Where c specific…

Q: Exergy (Work Potential) Associated with Kinetic and Potential Energy.

A:

Q: Energy.gov stated by the end of 2013, the United States’ wind power capacity provided enough…

A: Capacity of electricity generated by wind power = 16 million homes  Capacity of electricity used =…

Q: QUESTION 7 If R =8.10, R =-10.8, find 0 = R 19 Ry Rx I 1 122 degrees. Make sure your answer is a…

A: Rx=8.10 Ry=10.8 (downwards)

Q: 26. The energy levels for a Bohr atom are shown below. -0.54 ev -0.85 ev -1.51 ev n = 3 -3.40 ev n =…

A:

Q: 3. Eric Clapton plucks a C on a guitar string, which causes a fundamental frequency of 261 Hz. The…

A: Given that v=400m/s, f=261Hz and linear density=0.417g/m

Q: The potential energy of a 40-kg cannon ball is 14000J. How high was the cannon ball to have this…

A: Given data: Mass of the ball (m) = 40 kg Potential energy of the ball (PE) = 14000 J Need to…

Q: What is the kinetic energy of a 25 kg dog that is running at a speed of 8.7 m/s (about 19 mi/h)?

A: The formula for kinetic energy is given as follows:K=12mv2 K is the kinetic energy , m is the mass…

Q: A rocket, initially at rest on the ground, accelerates straight upward from rest with constant (net)…

A: In the given problem, the rocket starts accelerating straight upwards, starting from rest, with a…

Q: Three people pull simultaneously on a stubborn donkey. Jack pulls directly ahead of the donkey with…

A:

Q: 6. Calculate the latent heat of fusion for 2.40 kg of gold as it changes from a molten liquid into a…

A: Given data, Mass of gold M=2.4 kg

Q: 6 A uniform disk of mass M = 750 g, radius r = to rotate about an axis going into the paper at point…

A: Given: The mass of the disk is 750 g. The radius is 28 cm. The force applied is 1.05 N.

Q: Problem 10: Examine the three-dimensional conductor in the figure, that has a cavity in its…

A: The given charge, q=3.6 μC=3.6×10-6 C   The charge inside the cavity, q'=27.7 μC=27.7×10-6 C

Q: A piano with a mass of 137 kg is lifted 10 m above the ground in 5 s by a crane. What is the power…

A: mass of piano m = 137 kg height lifted h =10 m time t=5s

Q: If a rock is dropped from a height of 210 ft, its poistiont seconds after it is dropped until it…

A:

Q: What is the kinetic energy of a 27 kg dog that is running at a speed of 7.9 m/s (about 18 mi/h)?

A:

Q: The electric potential cannot be calculated from the electric field. Select one: O True False

A: Electric potential: around of work needed to move a unit of  electric charge from a reference point…

Q: How much work does a 5000 Watt clothes dryer do when you run it for 30 minutes? 30 minutes = 1,800…

A:

Q: 20. How many liters of oil would be needed to supply all of the world's energy needs for one year?

A: Solution:-             Energy released by 1…

Q: The magnetic field in (Figure 1) is decreasing at the rate 0.60 T/s. Figure What is the magnitude…

A: Given rate of decreasing magnetic field dBdt = 0.6 T/s radius of circle r = 1 cm = 0.01 m

Q: 008 47. . A dropped rubber ball hits the floor with a speed of 8.0 m/s and rebounds to a height of…

A:

Q: What is the kinetic energy of a 30 kg dog that is running at a speed of 8.6 m/s (about 19 mi/h)?

A: The expression for the kinetic energy of the dog is, KE=12mv2 Here, m is the mass of the dog and v…

Q: A book on a shelf has potential energy of 200J and two times the mass of a book next to it. What is…

A: Given data The gravitational potential energy for the book is given as PEh = 200 J. The…

Q: Convert the following to Fahrenheit readings: (a) 120 °C, (b) 12 °C, and (c) –-5 °C.

A: 3.

Q: 14.. 37. ● What is the frequency heard by a person driving at 60 km/h directly toward a factory…

A:

Q: 7.5. Show that in a spatially-flat matter-dominated cosmology the density parameter evolves as…

A: Given that, The density parameter of spatially flat matter dominated cosmology : Ω(z) = Ω₀…

Q: s 1 pound of coal to generate one kWh of electricity. How much coal would an average home use in a…

A: in India average use of electricity per day = 5.7 Kwh / day  1 pound of coal to generate one kWh of…

Q: What is the kinetic energy of a 15 kg dog that is running at a speed of 7.0 m/s (about 16 mi/h)?

A: Given mass m = 15 kg speed v = 7.0 m/s  we have to find out kinetic energy