hi im a little stuck on this question that came from my textbook in class it got a little confusing for me because i really dont know how to taxle this problem especially because of the fact that the problem is talking about pushing and not tension.
it writes
"A 1,480-N crate is being pushed across a level floor at a constant speed by a force F of 370 N at an angle of 20.0 degrees below the horizontal, as shown in the figure a below. The floor has some amount of friction. "

The questions ask me to make a "free-body diagram"
- write an equation each for the x & y components of the resultant force

-determine the normal force and lastly what exactly is the coefficient of kinetic friction between the crate and the floor

Answer:

Explanation:

2^5=32-20=-12 meters per sec (going backwards).

If this is correct pls mark me. brainly to let me know, tyy C:

Answer:

HCI

Explanation:

HCI is a strong electrolyte and an acid.

Answer:

Positives:

- The Electricity is Carbon-free

- The Power Stations have a 'Small Land Footprint' and a very High Power Output

Negatives:

- Can produce decay products which are harmful such as Nuclear Waste

- Non-renewable Source of Energy

Answer:

Uranium is radioactive

Explanation:

By using and enriching uranium you will expose the environment to EM radiation which is harmful to organisms, either through the uranium directly or through its waste products.

This question involves the concepts of focal length and mirror formula.

The image distance will be "1 cm".

The mirror formula relates the focal length, image distance, and object distance through the following formula:

[tex]\frac{1}{f}=\frac{1}{p}+\frac{1}{q}[/tex]

where,

Therefore.

[tex]\frac{1}{1.5\ cm}=\frac{1}{3\ cm}+\frac{1}{q}\\\\\frac{1}{1.5\ cm}-\frac{1}{3\ cm}=\frac{1}{q}\\\\0.667 + 0.333 = \frac{1}{q}\\\\[/tex]

q = 1 cm

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Answer:

The image distance is 3.0 cm

Explanation:

Object distance: 3.0 cm          Focal length: 1.5 cm       Image distance: ? cm

1/f=(1/ do）+（1/di​​​​​​​)

1/1.5=(1/3.0)+(1/x)

(2/3)-(1/3)=1/x

1/3=1/x

x=3.0 cm

The image distance is 3.0 cm.

Answer:

it is preaty simple

Explanation:

72/2=36

i hope, that helps, if no i'm sorry

[tex]\underline{\underline{\large\bf{Solution:-}}}\\[/tex]

(I) Emf developed,E in the loop is given as:

[tex]\begin{gathered}\\\implies\quad \sf E = BLv \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf E = 0.8 \times 0.3 \times 12 \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \sf E = 2.88 V \\\end{gathered} [/tex]

[tex]\longrightarrow[/tex]I = E/R

[tex]\quad[/tex]R = E/I

where

[tex]\begin{gathered}\\\implies\quad \sf R = \frac{2.88}{3} \\\end{gathered} [/tex]

[tex]\begin{gathered}\\\implies\quad \boxed{\sf{ R = 0.96 \;ohm}}\\\end{gathered} [/tex]

(ii) The direction of current induced is from P to Q which is given by B × V vector . It may also be explained by Lenz law. Since magnetic field is from S to N . The fingers of the right hand are placed around the wire so that the curling of fingers will show the direction of the magnetic field produced by the wire then the thumb points in the direction of current flow which is from P to Q.

Answer:

Kinetic friction is related to the normal force N by f k = μ k N f k = μ k N ; thus, we can find the coefficient of kinetic friction if we can find the normal force on the skier

Explanation:

Answer:

D. echolocation

please please please please please please

Answer:

D. echolocation

Explanation:

Dolphins communicate underwater using sound waves. This is called echolocation

The work done on the mouse by air resistance is equal to 196 Joules.

Given the following data:

Mass = 200 grams to kg = 0.2 kg.

Distance = 100 meters.

Scientific data:

Acceleration due to gravity = 9.8 [tex]m/s^2[/tex]

In Science, work done is generally calculated by multiplying force and the vertical distance or displacement experienced by an object.

Mathematically, work done is given by the formula:

[tex]Work\;done = force \times displacement = mgh[/tex]

Substituting the given parameters into the formula, we have;

[tex]Work\;done = 0.2 \times 9.8 \times 100[/tex]

Work done = 196 Joules.

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Answer:

Δt = Δτ / (1 - β^2)1/2

Δt  is the time observed

Δτ is the proper time (3.00 s)

β = v / c = .96

Δt = 3.00 / (1 - .96^2)^1/2 = 10.7 sec

Answer:

it's speed

mass of the object

and the radius of the circle

Answer:

1. messy

2. unorganized

3. dangerous

4. not a safe place

5. chemicals everywhere

6. hazardous

7. no adult in room

8. no guidance

9. children do not know what their doing

10. sharp objects

11.messing around

12. child messing around on high areas

13. can cause dangerous chemical reactions

15.adult may not know the children are in the room

16 the adult may be irresponsible

17.do not have experience

18. unprofessional

19. may get adult in trouble

20. is responsible or may not be.

Answer:

D

Explanation:

Physics and Chemistry are the most basic disciples in science, so the answer is not A or B.

Mathematics is the language of science; it could be the answer.

Most likely, you are looking for logic which describes the validity of an argument that has already been developed. I would pick D, but your marker may not agree.

Answer:

Photography is the art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.

Explanation:

In the definition of photography:

the art or process of producing images by the action of radiant energy and especially light on a sensitive surface (such as film or an optical sensor)

Purpose of photography:

To communicate and document moments in time.

Explanation:

When you take a photograph and share it with others, you're showing a moment that was frozen through a picture. This moment can tell someone many things, from the environment to what people are doing.

Hope this helps you.

Answer:

It's an art or an application of clicking photos .

Answer: Can't see clearly.

Explanation:

With a constant angular acceleration of 1.27 rad/s^2 and acceleration of 27.5 s, is mathematically given as

[tex]\theta = 1848 radians[/tex]

Generally, the angular velocity  is mathematically given as

w2 = 0 + 1.27*27.9

w2 = 35.43 rad/s

Therefore

[tex]\theta1 = 0.5*1.27*27.9*27.9[/tex]

[tex]\theta2 = w2*(66.1-27.9)\\\\\ \theta = \theta1 + \theta2[/tex]

[tex]\theta = 1848 radians[/tex]

In conclusion, the total angle is

[tex]\theta = 1848 radians[/tex]

Read more about Angle

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Answer:

Explanation:

average acceleration= (15-0)/5

                                   =15/5

                                   3ms-2

The boy would lose 25000 Joules going from the top of the hill to the village.

Potential energy is the energy stored in an object as a result of its position in relative with another object. It is given by:

Potential energy = mass * acceleration due to gravity (g) * height.

g = 10 m/s²

Let us assume the boy has a weight of 50 kg. His starting point is (400, -50) m. This means the hill is 50 m high and 400 m from the village.

Potential energy = 50 * 10 * 50 = 25000 Joules

The boy would lose 25000 Joules going from the top of the hill to the village.

Find out more on potential energy at: https://brainly.com/question/24933254

Answer:

real image

I hope this helps you

:)

Answer:

Category 1

Explanation:

I hope this helps

Answer: CAT-1

Explanation:

Answer:

Explanation:

Situation 1 describes an elastic collision in which momentum is conserved while situation 2 is an inelastic collision in which momentum is not conserved.

When momentum is conserved, the speed of center of mass will not change. So the correct answer is Answer B: In situation 1, the center of mass never changes its speed, because there are no net external forces on the system before, during, or after the collision.

Answer:

A

Explanation:

Answer A: In situation 1, the center of mass never changes its speed, because block 1 is moving before the collision, and block 2 is moving after the collision.

In situation 1, the center of mass never changes its speed, because there are no net external forces on the system before, during, or after the collision.

Hope it helped~

Answer:

no

Explanation:

this may be wrong, but i would assume no because they have to cover the same distance therefore the faster runner would cross the finish line first.

Answer:

a heavy person standing on a bed

Explanation:

The heavy person will have more mass than the lighter person, so they will create greater pressure.

The velocity of the car will be   [tex]V=18.18\ \frac{m}{s}[/tex]

As velocity is the movement of the car with respect to time.

It is given that

Mass m  =  1100kg

Momentum= 22000 [tex]\frac{kgm}{s}[/tex]

The momentum is given as

[tex]P=mv[/tex]

[tex]v=\dfrac{p}{m}[/tex]

[tex]v=\dfrac{22000}{1100} =18.18 \ \dfrac{m}{s}[/tex]

Thus  the velocity of the car will be   [tex]V=18.18\ \frac{m}{s}[/tex]

To know more about momentum follow

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Answer:

The number of turns in a coil

Explanation:

Answer: 0.75 Ohms

Explanation:

Use the Joule heating law stating that the power is equal to the square of the voltage over the resistance:

[tex]P=V^2/R[/tex]

Plug everything in:

[tex]48=(6^2)/R[/tex]

[tex]R=6^2/48[/tex]

[tex]R=36/48=0.75[/tex]