What is the physics definition of work? How is work calculated? How would you calculate the amount of work done in a slapshot.

Answer:

Radiation is the transfer of heat energy through space by electromagnetic radiation.

Explanation:

Answer:

The answer is 21024g/mL

Explanation:

Multiply 657 by 32:

 657

×  32

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

21024

   ↳            21024 g/mL

Answer:

a magnet is a material with a North and South pole

Answer:

air and water

Explanation:

The matter through which a mechanical wave travels is called the medium (plural, media). There are three types of mechanical waves: transverse, longitudinal, and surface waves. They differ in how particles of the medium move when the energy of the wave passes through. The particles in a medium become disturbed and pass on this disturbance to the next one, and so on. So, the disturbance caused by the particles can travel through a medium such as air, ocean water, land, violin strings, Slinky coils, etc. Sound waves can travel through solids, liquids, or gases.

Answer:

Every Sentra is powered by a 149-hp 2.0-liter four-cylinder engine that pairs with a continuously variable automatic transmission (CVT) and front-wheel drive.

Explanation:

Answer:

735 N

Explanation:

(A magnetic compass does not point to the geographic north pole. A magnetic compass points to the earth's magnetic poles, which are not the same as earth's geographic poles. Furthermore, the magnetic pole near earth's geographic north pole is actually the south magnetic pole. When it comes to magnets, opposites attract.)

Answer:

3 m/s

Explanation:

Kinetic energy of a body is given by the formula [tex]K= {1\over2} m v^2[/tex]. Let's replace everything we have and solve for what's left.

[tex]1125J = {1\over2}\cdot 250 kg \cdot v^2[/tex]

[tex]v^2 ={ 1125 \cdot 2 \over 250}}[/tex] or [tex]v= 3 {m \over s}[/tex]

Answer:

I am really sorry but I can't understand the question.

Can you translate the question to English?

Explanation:

Answer:

C

Explanation:

C is i thing

Answer:

Refraction

Explanation:

Reflection involves a change in direction of waves when they bounce off a barrier.

Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

Please mark as brainliest if this helps! :)

Answer:

It is a renewable resource as it renewably heats up water to a high temperature. Geothermal energy is more environmentally friendly than conventional fuel sources such as coal and other fossil fuels. In addition, the carbon footprint of a geothermal power plant is low.

Disadvantages: If dug deep underground, it can cause earthquakes. generates waste, reservoirs require proper management, it's location-specific, has high initial cost

Answer: Dispersion

Explanation:

The book's initial speed = 2.83 m/s

The mass of the textbook, m = 0.75 kg

The final speed of the textbook, v = 0 m/s (Since it comes to rest)

The distance covered by the book, d = 1.2 m

Coefficient of kinetic friction, [tex]\mu = 0.34[/tex]

The frictional force between the table and the book is calculated as:

[tex]f_k=-\mu mg\\\\ f_k=-0.34 \times 0.75 \times 9.8\\\\f_k=-2.499N[/tex]

The workdone by the textbook is calculated as:

[tex]W = Fd\\\\W=2.499(1.2)\\\\W=2.9988J[/tex]

According to the work-kinetic energy theorem:

Workdone by the book = Change in Kinetic energy

[tex]W = 0.5m(v^2-u^2)\\\\-2.9988=0.5 \times 0.75 \times (0^2-u^2)\\\\-2.99988=-0.375u^2\\\\u^2=\frac{-2.9988}{-0.375} \\\\u^2=7.9968\\\\u=\sqrt{7.9968}\\\\u=2.83m/s[/tex]

The book's initial speed = 2.83 m/s

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Answer:

The movement, or a tendency to move, toward a center of gravity, as in the falling of bodies to the earth is called gravitation

First and foremost, starlight appears less distorted in the thin atmosphere on mountaintops. At high altitudes, there is less atmosphere to absorb infrared energy, which reveals details about some of the coldest objects in the universe, such as clouds of gas and dust and the disks of dust that give birth to planets.

Answer:

Force = mass × acceleration

[tex]{ \boxed{ \rm{F = ma}}}[/tex]

• For the first case;

[tex]{ \tt{F = 18m}}[/tex]

• For the second case;

[tex]{ \tt{3F = \frac{1}{2} m \times a}} \\ \\ { \tt{F = \frac{1}{6}m \times \frac{1}{3}a }}[/tex]

Then equate the equations:

[tex]{ \tt{18m = \frac{1}{6} m \times \frac{1}{3}a }} \\ \\ { \tt{18 = \frac{1}{3} ( \frac{1}{2} \times a)}} \\ \\ { \tt{54 = \frac{a}{2} }} \\ \\ { \boxed{ \mathfrak{answer{ : \rm {a = 98 \: m {s}^{ - 1} }}}}}[/tex]

The motion or path of the tennis ball is the path of a projectile, which has

both vertical and horizontal motion.

The total horizontal distance traveled by the tennis ball during the entire

time it is in the air ≈ 16.514 meters.

Reasons:

The given parameters are;

The direction in which the ball is launched = 45°

The initial vertical velocity of the ball, [tex]v_y[/tex] = 9.0 m/s

The initial horizontal velocity of the ball, vₓ = 9.0 m/s

The time it takes the ball to reach the maximum height, t = 0.92 seconds after its launch

The total horizontal distance traveled, by the tennis ball is given by the formula;

[tex]\Delta d_x = \dfrac{v_1^2 \cdot \left( 2 \cdot cos(\theta) \sin(\theta)}{y} = \dfrac{2 \times v_x \times v_y}{g}[/tex]

Which gives;

[tex]\mathrm{The \ total \ distance \ travelled, \ \Delta} d_x = \dfrac{2 \times 9.0\times 9.0}{9.81} \approx 16.514[/tex]

The total horizontal distance traveled by the tennis ≈ 16.514 meters

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Hi there!

(A)

When the rock reaches the peak, it will have a vertical velocity of 0 m/s. We can use the equation:

vf = vi + at

vf = final velocity (0 m/s)

vi = initial velocity (2 m/s)

a = acceleration (in this situation, due to gravity = 9.8 m/s²)

t = time (s)

0 = 2 + (-9.8)t

2/9.8 = t = .204 sec

(B)

Use the equation:

d = vit + 1/2at²

d = 2(.204) + 1/2(-9.8)(.204²)

d = .204 m

Answer:

thermal energy

Explanation:

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The Correct choice is ~

D. 18.0 Newtons

because the resultant force can't exceed 16 Newtons ~

Given what we know about volcanic formations, we can conclude that the Mt. St. Helens volcano was formed by the process described in option D, "Subduction  an oceanic continental convergent boundary caused a mountain  range to form and magma to come to the surface".

Mt. St. Helens is a volcano that falls under the category of a stratovolcano. Stratovolcanoes are volcanoes that commonly form at subduction zones. This process forms chains or clusters of mountains along the boundaries of tectonic plates, where oceanic crust is pulled under another type of crust. This process tends to form mountain ranges which contain volcanoes, such as:

and so on.

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Answer:

F=10,000N

Explanation:

F=ma

m=5000kg

a=2m/s^2

[tex]F=(5000kg)*(2m/s^{2} )\\\\\\\\F=10000N[/tex]

Answer:

[tex]\boxed {\boxed {\sf 10,000 \ Newtons}}[/tex]

Explanation:

We are asked to find the force of Annabella's car when it hits a tree.

According to Newton's Second Law of Motion, force is the product of mass and acceleration.  Therefore, it is calculated using the following formula:

[tex]F=ma[/tex]

The mass of the car is 5000 kilograms and the acceleration is 2 meters per second squared.

Substitute the values into the formula.

[tex]F= (5000 \ kg)(2 \ m/s^2)[/tex]

Multiply.

[tex]F= 10,000 \ kg*m/s^2[/tex]

Convert the units. 1 kilogram meter per second squared is equal to 1 Newton, so our answer of 10,000 kg*m/s² is equal to 10,000 Newtons.

[tex]F= 10,000 \ N[/tex]

Annabella's car hits the tree with a force of 10,000 Newtons.

Answer:

the size of the shadow will be smaller due to smaller hands

Answer:

Sorry

Explanation:

I really don't know what to say about this question I am not sure what to say about this

Answer:

45555555555555555555

Explanation:

I think the number 2, not sure

Answer:

I don't know...

I'm sorry

Let’s assume that we can ignore the resistance of the air (as one usual does in physics homework).

The distance ‘s’ traveled by an object under constant acceleration ‘a’ in a time ‘t’ is given by

s = 1/2 a t^2

if the object starts at rest. As t=4 seconds and ‘a’ is the usual 9.81 m/s^2, you can put the numbers in and get

s=8*9.81 m ~78.5m or 78 500 cm

A foot amounts to (as you know) 30.3 cm, so you have to divide the above number by the 30.3cm/ft and get

s ~ 257 ft.

Explanation: