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Nutka1998 [239]
2 years ago
5

when a branding iron gets heated in a fire the handle becomes hot, how is the energy transferred to the handle

Physics
1 answer:
Anuta_ua [19.1K]2 years ago
4 0
This is because of Convection. Convection is the transfer of thermal energy by the movement of particles from one part of something to another.
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A proton and an electron are placed in an electric field. Which undergoes the greater acceleration?
iren2701 [21]

Newton's 2nd law:

Fnet = ma

Fnet is the net force acting on an object, m is the object's mass, and a is the acceleration.

The electric force on a charged object is given by

Fe = Eq

Fe is the electric force, E is the electric field at the point where the object is, and q is the object's charge.

We can assume, if the only force acting on the proton and electron is the electric force due to the electric field, that for both particles, Fnet = Fe

Fe = Eq

Eq = ma

a = Eq/m

We will also assume that the electric field acting on the proton and electron are the same. The proton and electron also have the same magnitude of charge (1.6×10⁻¹⁹C). What makes the difference in their acceleration is their masses. A quick Google search will provide the following values:

mass of proton = 1.67×10⁻²⁷kg

mass of electron = 9.11×10⁻³¹kg

The acceleration of an object is inversely proportional to its mass, so the electron will experience a greater acceleration than the proton.

6 0
4 years ago
3 m/s
zloy xaker [14]

Answer:

0.75Hz

Explanation:

Given parameters:

Speed of the wave = 3m/s

Wavelength  = 4m

Unknown:

Frequency of the wave  = ?

Solution:

The speed of a wave is given by the expression below:

     Speed  = frequency x wavelength

  Frequency  = \frac{Speed }{Wavelength}   = \frac{3}{4}    = 0.75Hz

5 0
3 years ago
Look at the vector r plotted below
solong [7]

Answer: option A. r = 3x+2y

Explanation:

Vector r is plotted on the graph. On x-axis each small division corresponds to 1 unit. Similarly on y-axis, each small division corresponds to one unit.

The vector is the resultant of addition of its x and y components. we would draw perpendicular to the x-axis and y-axis from the head of vector r.

On x-axis, r_x = +3 units

on y-axis, r_y = +2 units

r = r_x+r_y

Hence, vector r can be written as: r = 3x + 2y . Correct option is A.

7 0
4 years ago
A slide 4.1 meters long makes an angle of 35° with the ground. to the nearest tenth of a meter, how far above the ground is the
melomori [17]
The given are:A
djacent/Hypotenuse = sin 35° 
Height(h) - Adjacent
Hypotenuse- a length of a side: 

We will use the formula:
sin (angle) = op/hyp
sin 35° = h/ 4.1 m
0.57356 = h / 4.1 m
h = 0.576576 ·
4.1 = 2.35166 ≈ 2.4 m

Answer: the top of the slide is 2.4 m above the ground which is letter d.
4 0
3 years ago
If the number of homes with a pet dog is equal to 250, how many total homes are repersented by the chart?
scoray [572]
500 because 250 x 2 = 500
3 0
4 years ago
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