10. CALCULATE: Find the amount of power used in
each of the following examples. Show your
calculations.
a. You use a force of 10 N to move a box
100 m in 10 seconds.
b. An athlete lifting weights does 900 J of
work in 1 second.
c. A truck does 30,000 J of work in
15 seconds.
d. A furniture mover uses a force of 150 N to
push a large trunk 5 m across the floor in
5 seconds.

Answers

Answer 1

Answer:

Please find attached pdf

Explanation:


Related Questions

Lowest form of energy from the sun

Answers

UVA

I'm pretty sure it's UVA :)

what are the methods of avoiding demagnetization​

Answers

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The best method to use in prevention of self-demagnetization of a permanent magnet is by use of a keeper. Keepers were also commonly known as amateurs. They help in storing magnets safely, especially those that have low coercivity ( magnets that are extremely susceptible to stray fields).

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Hope It Helps!

What do you understand if the frequency of a sound is 70 Hz? ​

Answers

Answer:

see below

Explanation:

frequency of a wave is the number of complete waves produced per second

so 70 Hz

means, that 70 complete waves are produced in one second,

hope this helps

Why is it safer to collide with a soft cushion than a hard surface?

Answers

Answer:

Impulse is force multiplied by time; and together, the product must be 1 unit. A collision with soft ground will result in the 1 unit of impulse by a larger time and a smaller force (compared to the small time and a large force for the hard floor).

14) What is the velocity of a wave 5.35 x 10 cm long with a frequency of 16kHz

Answers

Answer:

wavelength= 5.35×10cm=0.535m

f= 16000hz

v= wavelength × f= 0.535×16000=8560m/sec

what is CHA-CHA-CHA.​

Answers

Answer:

The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo

please help anyone i will mark brainliest

Answers

Fg = G m₁ m₂ / r²

Fg = (6.67×10−¹¹) ( 70) ( 5.972×10²⁴) / (6.3781×10⁶)²

Fg = 685.43 N

Hi! Can somebody please help?

Answers

Answer:

Diagram A will reach the top first.

Explanation:

If it is going straight, it will go slower. The higher the movement speed the faster it is. Hope this helps!

A dipole is centered at the origin, with its axis along the axis, so that at locations on the axis, the electric field due to the dipole is given by E = (0, 1/4 pi epsilon_0 2qs/gamma^3, 0) v/m The charges making up the dipole are q_1 = +4 nC and q_2 = nC, and the dipole separation is s = 8 mm. What is the potential difference along a path starting at location p_1 = (0, 0.04, 0) m and ending at location P_2 = (0, 0.05, 0) m?

Answers

Answer:

Explanation:

Given that:

[tex]q_1 = + 4nC \\ \\ q_2 = -4nC \\ \\ q = 4nC[/tex]

[tex]P_1 = (0,0.04,0) m\\\\ P_2 = (0,0.05,0) m[/tex]

As [tex]q_1[/tex] [tex]\text{is nearer to }[/tex][tex]P_1 \& P_2[/tex] then [tex]q_2,q_1[/tex] [tex]\text{is positive, Thus}[/tex], [tex]E \limits^{\to}[/tex][tex]\text{ will be along the positive X-axis.}[/tex]

Recall that:

[tex]E ^{\to} = \dfrac{-dV}{dr}\implies E_y = \dfrac{-dV}{dy} \\ \\ = \int^{P_2}_{P_1}dV = -\int \limits ^{(0.05)}_{(0.04)}E_y \ dy \\ \\ \implies (V_{P_2}}-V_{(P_1)}) = \dfrac{-2q_5}{4 \pi \varepsilon _o} \int \limits ^{(0.05)}_{(0.04)} \dfrac{dy}{y^3} \\ \\ \implies (V_{P_2}}-V_{(P_1)}) = \dfrac{-2q_5}{4 \pi \varepsilon _o} \Big[ \dfrac{-1}{2y^2} \Big]^{0.05}_{0.04} \\ \\ \implies (V_{P_2}}-V_{(P_1)}) = \dfrac{q_5}{4 \pi \varepsilon _o} \Big[\dfrac{1}{y^2}\Big] ^{0.05}_{0.04}[/tex]

[tex]\\ \\ \implies (V_{P_2}}-V_{P_1}) = \dfrac{(4\times 10^{-9})(8\times 10^{-3})}{4 \pi (8.854 \times 10^{-12})} \Big [\dfrac{1}{(0.05)^2}-\dfrac{1}{(0.04)^2} \Big ]V \\ \\ (V_{P_2}}-V_{P_1}) = \mathbf{-64.71 \ volts}[/tex]

If an object is placed 50 cm in front of a concave mirror of 60 cm radius, what is the image size if object size is 15cm?

Answers

Answer:

V=22.5cm

Explanation:

6. Compare Which of the
following can carry the
most current?
a. 9-V battery
b. 220-V electrical outlet
c. 12-V battery
d. 110-V electrical outlet

Answers

answer is D. Hope it helps :)

Newton’s first law of motion states that an object's motion remains the same unless a force acts upon it. What would be an example of this law in action?

Answers

Answer:

A driver breaks suddenly and the passengers are flung forward

yo pls help me I'm desperate lowkey

Answers

The answer should be B
I think the awnser for this should be b

24 How long does it take for the Earth to orbit the Sun?
A one day
B one week
C one month
D one year

Answers

Answer:

365 days

So The Final Answer is a Year

D is the answer

Explanation:

Answer:

C one month

Explanation:

need physics help
ASAP please!

Answers

Answer:

D

Explanation:

What is the energy transformation of home gas?

Answers

Answer:

The Sun transforms nuclear energy into heat and light energy.

Our bodies convert chemical energy in our food into mechanical energy for us to move.

An electric fan transforms electrical energy into kinetic energy.

HELPPP PLEASE URGENT

Answers

convex mirrors are DIVERGING mirrors. The image will get DIMINISHED and VIRTUAL

which of the following has the most energy

Answers

the answer is blue light

What is the kinetic energy of a 0.500 kg toy car moving at a state of 1.50 m/s

Answers

Answer:0.563

Explanation:

The kinetic energy produced in a toy car is equal to 0.563 J.

What is the kinetic energy and potential energy?

The energy exhibited by a moving body because of its motion is said to be its kinetic energy. Work should be done which can change the kinetic energy of a moving object.

The kinetic energy of a moving object can be determined from the formula mentioned below:

K.E. = ½mv²     where ‘m’ and ‘v’ is the mass, velocity of the object.

Potential Energy (P.E.)is energy that is stored in an object due to its position and can be expressed as P.E = mgh where h, m, and g are the height, mass, and gravitational acceleration respectively.

Given, the mass of the toy car =, m = 0.500 Kg

The velocity of the toy car, v = 80 m/s

The kinetic energy = (1/2)× 0.500 ×(1.50)²

K.E. = 0.563 J

Learn more about kinetic energy, here:

brainly.com/question/15764612

#SPJ2

A student used three appliances in her dormitory room: a 1,200-watt iron, which she uses 3.5 hours per month: a lamp with a 100-watt bulb she uses 125 hours per month; and a 700-watt coffee maker, which she uses 15 hours month hours per month

Answers

Hi how are you poop poop poop poop poop poop poop poop

Write two characteristics of an educated society ​

Answers

Answer:

Different and better?

Explanation:

i dont think that helps lol

An educated person has the ability to think clearly and independently and has good judgement.

What is Education?

Education is defined as purposeful activity directed towards achieving some objective, such as the dissemination of knowledge or the promotion of skills and character traits, whose aims include the development of understanding, rationality, kindness and honesty.

There are three main types of education which are as follows:

Formal, Informal and Non-formal.

The specialty of education is that it is pre-determined and pre-planned. It is regular and spatial i.e. time bound and regulated by the institutional. Proper education improves people's understanding of the world around them which make them less susceptible to the influence of others

Thus, an educated person has the ability to think clearly and independently and has good judgement.

Learn more about Education, here:

https://brainly.com/question/22623596

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Based on Nia's notes, what would be the BEST way to investigate the heat transfer based on the movement of the molecules?

Answers

Answer: Nia could measure the temperature of the bottom floor of a house to see if the heat had risen in the house due to convection.

Explanation:

Answer:

Nia could measure the temperature of the bottom floor of a house to see if the heat had risen in the house due to convection.

Explanation:

Because energy transferred by the mass motion of molecules.

Being overweight or obese increases the risk of:
A. Diabetes
B. Heart disease
C. Stroke
D. All of the above.

Answers

theanswer is b.heart disease

Look at the diagram below. Which wave effect is being shown?
Enter your answer

Answers

Answer:

Where is the diagram????

Answer:

reflection

Explanation:

The 25-mph zone is 150 yards long. How much time did the student save (in seconds) by speeding past the school

Answers

Answer:

Time = 12.27seconds

Explanation:

Given

Speed = 25miles/hour

Distance = 150 yards = 150(0.000568182)miles

Distance (in miles) = 0.0852273miles

Get the time

Speed = Distance/Time

Time = Distance/Speed

Time = 0.0852273/25

Time = 0.0034hours

Time = 0.0034 * 3600secs

Time = 12.27seconds

can you give me an example about radiation

Answers

Explanation:

 A burning candle emits radiation in the form of heat and light. The Sun emits radiation in the form of light, heat, and particles.

Answer: The energy from the sun is one great example of radiation. The sun emits light in a broad range of wavelengths which all contain energy. These waves are also discussed in the climate section for energy balance. The waves are emitted from the sun and travel through space and hit the earth and other planets.

EXTRA EXAMPLES: heat from a stove burner.

visible light from a candle.

x-rays from an x-ray machine.

alpha particles emitted from the radioactive decay of uranium.

sound waves from your stereo.

microwaves from a microwave oven.

electromagnetic radiation from your cell phone.

A horizontal pipe of diameter 0.933 m has a smooth constriction to a section of diameter 0.5598 m. The density of oil flowing in the
pipe is 821 kg/m3. If the pressure in the pipe is 7220 N/m2 and in the constricted section is 5415 N/m2, what is the rate at which oil is flowing?

Answer in units of m3/s.

Answers

Answer:s

Explanation:

The answer would most likely be 3479 m3/s

What is the Kinetic Energy of a 120 kg object that is moving with a velocity of 15 m/s

Answers

Answer:

Kinetic Energy:120 x 15=1800

Explanation:

Answer:

13500J

Explanation:

Kinetic energy = (1/2×120)kg × (15m/s)^2

KE = 60kg × 225 (m/s)^2 = 13500J

A 20 kg cart moving at 4 m/s has how much momentum?

40 kg*m/s
40 kg*m/s

5 kg*m/s
5 kg*m/s

80 kg*m/s

Answers

Answer:

We conclude that the required momentum is 80 kgm/s.

Explanation:

Given

Mass m = 20 kgVelocity v = 4 m/s

To determine

The momentum p = ?

Important Tip:

The momentum of an object is the product of mass and velocity.

We can determine the momentum using the formula

[tex]p = mv[/tex]

where

p is the momentumm is the massv is the velocity

now substituting m = 20 and v = 4 using the equation

[tex]p = mv[/tex]

[tex]p = (20) (4)[/tex]

[tex]p = 80[/tex] kg m/s

Therefore, we conclude that the required momentum is 80 kgm/s.

The momentum of the moving cart is 80kgm/s.

HOW TO CALCULATE MOMENTUM:

The momentum of a body can be calculated by multiplying the mass of that body by its velocity. That is;

Momentum (p) = mass (m) × velocity (v)

According to this question, a 20kg cart moving at 4 m/s will have a momentum as follows:

Momentum (p) = 20kg × 4m/s

Momentum (p) = 80kg*m/s.

Therefore, the momentum of the moving cart is 80kgm/s.

Learn more at: https://brainly.com/question/17173143?referrer=searchResults

A transverse wave has a frequency of 200 Hz with a wavelength of 1.0 m. Determine the speed
of the wave.

Answers

Answer:

200 m\ s Ans .....

Explanation:

Data:

f = 200 Hz

w = 1.0 m

v = ?

Formula:

v = f w

Solution:

v = ( 200)(1.0)

v = 200 m\s Ans .........

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