Physics, 07.09.2019 05:30 123userhi

One of the following statements is incorrect, (a) the car traveled around the track at a constant velocity. (b) the car traveled around the track at a constant speed. which statement is incorrect and why?

Answers: 3

Show answers

Answers

Answer from: am2garcia5

(b) The car traveled around a track with constant velocity is incorrect

Explanation:

We know that velocity is vector quantity and speed is scalar quantity

As in the car traveled around the track its direction will change at every instant so velocity can not be constant as its depends on both magnitude as well as direction.

Speed is a scalar quantity which only depends on the magnitude and the speed can be constant around the track

So option (a) is incorrect statement

Answer from: Quest

so here is the information for current research:

-nrel's geothermal analysts, scientists, and engineers perform a full range of research from developing advanced methods of locating and accessing geothermal resources to exploring innovative technologies to extract and produce clean energy from the heat of the earth

and here is the information for the technology of geothermal energy:

-it's clean and sustainable

-resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma

-almost everywhere, the shallow ground or upper 10 feet of the earth's surface maintains a nearly constant temperature between 50° and 60°f (10° and 16°c)

-geothermal heat pumps can tap into this resource to heat and cool buildings

-a geothermal heat pump system consists of a heat pump, an air delivery system (ductwork), and a heat exchanger-a system of pipes buried in the shallow ground near the building

-in the winter, the heat pump removes heat from the heat exchanger and pumps it into the indoor air delivery system

-in the summer, the process is reversed, and the heat pump moves heat from the indoor air into the heat exchanger

-the heat removed from the indoor air during the summer can also be used to provide a free source of hot water

Answer from: Quest

The answer is b hope this

Another question on Physics

Physics, 22.06.2019 11:00

Which of the following are guidelines to follow for obtaining accurate observations

Answers: 2

Answer

Physics, 22.06.2019 13:40

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Answers: 2

Answer

Physics, 22.06.2019 16:00

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

Answers: 1

Answer

Physics, 22.06.2019 18:30

Both speed and velocity measure how fast something is moving. however, since speed is not a it does not require a(n question 6 options: a) quantity , unit b) magnitude, unit c) scalar, direction d) vector, direction

Answers: 2

Answer

You know the right answer?

One of the following statements is incorrect, (a) the car traveled around the track at a constant ve...

Questions