In which of the following methods of heat transfer is it necessary for the objects to be directly touching one another? A. convection. B. radiation. C. conduction. D. all of these.

Answers

Answer 1

Answer: The following method that is necessary for the objects to be directly touching one another is called conduction.

Answer 2

Answer: Conduction is the direct transfer of heat

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The energy of the ball has been reduced by joules after bouncing back. This reduction happens because potential energy transforms to energy.
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The phase of matter which is exposed to normal atmospheric pressure is solely dependent upon temperature? true or false

The _______scale is called an absolute temperature scale, and its zero point is calledabsolute zero.
O A. Celsius
O B. Fahrenheit
O C. Kelvin

Answers

Answer:

It is C the kelvin scale

Explanation:

Have a great day

At what launch angle will a projectile travel the farthest distance if launched on level ground? Multiple Choice: a. 45 degrees b. 60 degrees c. 20 degrees d. 30 degrees e. 75 degrees

Answers

Answer:

A. 45 degrees

Explanation:

A projectile travels the farthest when it is launched at an angle of 45 degrees.

The maximum range is 45 degrees, ignoring air resistance.

sin(2θ) = 1

∴ 2θ = π/2.

(2θ)/2 = (π/2)/2

θ = π/4

π/4 or 45°

Answer:

A. 45 degrees

Explanation:

Which theory states that if you are forced to smile at an event, you will enjoy it? A. The Schachter-Singer theory B. The Lazarus theory C. The facial feedback theory D. The opponent-process theory

Answers

Answer:

C. The facial feedback theory

Explanation:

The facial feedback theory as postulated by William James and connects back to the famous Charles Darwin talks about how facial expressions stimulate our emotional state of being. Based on this theory, the emotional experiences we have are determined by the looks on our faces.

According to the question, smiling at an event makes you enjoy it is an example of what the The facial feedback theory is explaining. Furthermore, smiling, which is a facial expression causes or stimulates an emotional state of enjoyment in that event.

Which of the following devices is associated with the reception of radio signals?

Answers

What are the "following" devices ? ?
I think they're a list of choices that you have but aren't sharing.

A few devices associated with the reception of various types of
radio signals include the resonant tank, the local oscillator, the
mixer, the detector, the coherer, the discriminator, the parabolic
reflector, the lecher wires, the audio transducer, the demultiplexer,
and ... my personal guess ... the 'antenna' or 'aerial'.

A machine uses a force of 200 newtons to do 20,000 joules of work in 20 seconds. Find the distance the object moved and the power of the machine.

Answers

work=force * distance
20,000 joules= 200 newtons * d
divide both sides by 200

100= distance

Which of the following shows the abbreviation for a unit of density? (a) lb/mL
(b) g/cm
(c) g/cm3
(d) L/kg

Answers

c) gram/centimeters^3

Answer:

g/ml

Explanation:

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Four parallel-plate capacitors are constructed using square plates, and each has a dielectric inserted between the plates.?Rank the capacitance of each capacitor in order from highest to lowest.A = side length (L/2) ; distance between plates (d) ; dielectric current (k)B = side length (L) ; distance between plates (d/2) ; dielectric current (4k)C = side length (2L) ; distance between plates (d) ; dielectric current (2k)D = side length (L) ; distance between plates (2d) ; dielectric current (2k)