Danielle took an iron nail and wrapped thin copper wire around it, then connected the ends of the copper wire to a battery. Which two forces can Danielle's device produce?

A. electrical force and frictional force

B. electrical force and magnetic force

C. frictional force and gravitational force

D. magnetic force and gravitational force

The normal force of the ferris wheel on a 10kg toddler at the very bottom of the ferris wheel is 102.41 N.

The normal force of the ferris wheel on a 10kg toddler at the very bottom of the ferris wheel is calculated as follows;

Fn = Fc + mg

Fn = mω²r + mg

Fn = m(ω²r + g)

where;

Fn = 10(0.21² x 10  + 9.8)

Fn = 102.41 N

Thus, the normal force of the ferris wheel on a 10kg toddler at the very bottom of the ferris wheel is 102.41 N.

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Answer:

the fruit was made before the color

Answer:

I think the color because I lowkey think the food Orange was named after the color bc ofc it was Orange.

Explanation:

As the skater descends his kinetic energy increases and his potential energy decreases. The total energy remains constant.

Energy is the ability to do work. Types of energy are potential, kinetic, thermal and so on.

Potential energy is the energy stored in an object due to its position relative to another object. Kinetic energy is the energy due to the motion of an object.

As the skater descends his kinetic energy increases and his potential energy decreases. The total energy remains constant.

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Answer:

When you jump off a train, you jump off a certain height and your downwards (vertical) velocity is zero. But your forward (horizontal) velocity is not. You will hit the ground on split second with your horizontal velocity practically the same as the train.

Explanation:

you be in serious injury.

Explanation:

10 ......

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Answer:

(a) the electrical power generated for still summer day is 1013.032 W

(b)the electrical power generated for a breezy winter day is 1270.763 W

Explanation:

Given;

Area of panel = 2 m × 4 m, = 8m²

solar flux  GS = 700 W/m²

absorptivity of the panel, αS = 0.83

efficiency of conversion, η = P/αSGSA = 0.553 − 0.001 K⁻¹ Tp

panel emissivity , ε = 0.90

Apply energy balance equation to determine he electrical power generated;  

transferred energy + generated energy = 0

(radiation + convection) +  generated energy = 0

[tex][\alpha_sG_s-\epsilon \alpha(T_p^4-T_s^4)]-h(T_p-T_\infty) - \eta \alpha_s G_s = 0[/tex]

[tex][\alpha_sG_s-\epsilon \alpha(T_p^4-T_s^4)]-h(T_p-T_\infty) - (0.553-0.001T_p)\alpha_s G_s[/tex]

(a) the electrical power generated for still summer day

[tex]T_s = T_{\infty} = 35 ^oC = 308 \ k[/tex]

[tex][0.83*700-0.9*5.67*10^{-8}(T_p_1^4-308^4)]-10(T_p_1-308) - (0.553-0.001T_p_1)0.83*700 = 0\\\\3798.94-5.103*10^{-8}T_p_1^4 - 9.419T_p_1 = 0\\\\Apply \ \ iteration \ method \ to \ solve \ for \ T_p_1\\\\T_p_1 = 335.05 \ k[/tex]

[tex]P = \eta \alpha_s G_s A = (0.553-0.001 T_p_1)\alpha_s G_s A \\\\P = (0.553-0.001 *335.05)0.83*700*8 \\\\P = 1013.032 \ W[/tex]

(b)the electrical power generated for a breezy winter day

[tex]T_s = T_{\infty} = -15 ^oC = 258 \ k[/tex]

[tex][0.83*700-0.9*5.67*10^{-8}(T_p_2^4-258^4)]-10(T_p_2-258) - (0.553-0.001T_p_2)0.83*700 = 0\\\\8225.81-5.103*10^{-8}T_p_2^4 - 29.419T_p_2 = 0\\\\Apply \ \ iteration \ method \ to \ solve \ for \ T_p_2\\\\T_p_2 = 279.6 \ k[/tex]

[tex]P = \eta \alpha_s G_s A = (0.553-0.001 T_p_2)\alpha_s G_s A \\\\P = (0.553-0.001 *279.6)0.83*700*8 \\\\P = 1270.763 \ W[/tex]

Answer:A).3.16 s B).56.92

A).12.5m/s

B).7.81m

Explanation:

Answer:

Explanation:

Mica dielectric constant (k) is approximately 3. The distance between the plates is 5 mm = [tex]5\times10^{-3}[/tex] m = d and the area of each plate is[tex]A = 0.1\times 0.2=2\times 10^{-2} m^{2}[/tex]. So, the capacitance of that capacitor is:

[tex]C=\frac{\epsilon_{0}kA}{d}=\frac{(8.85\times10^{-12})(3)(2\times10^{-2}}{5\times10^{-3}}=10.62\times10^{-11} =1.062\times10^{-10} F[/tex]

or approximately 0.106 nF.

Answer:

pls first attach the fig.

The graph in the figure shows the position of a particle as it travels along the x-axis. The magnitude of the average speed of the particle between t = 1.0 s and t = 4.0 s is 1.3 m / s. Therefore, option B is correct.

The term average speed is defined as the total distance traveled by the object in a particular time interval.

In the kinematics studies the movement of bodies, give the relationships between position, velocity and acceleration. In the special case that the acceleration is zero the motion is known as uniform motion.

       v = Δ x / Δt

Where v is the velocity, Δx is the position variation and Δt is the time variation in the analyzed interval.

Therefore,

v =  2.0 - ( - 2.0 ) / 4.0 - 1.0

v = 1.33 m / s          

Thus, The magnitude of the average speed of the particle between t = 1.0 s and t = 4.0 s is 1.3 m / s, option B is correct.

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#SPJ2

Your question is incomplete, most probably your question was

The graph in the figure shows the position of a particle as it travels along the x-axis. What is the magnitude of the average speed of the particle between t = 1.0 s and t = 4.0 s?

Please help!! The graph in the figure shows the position - 1, Graph is attache below in image.

Answer:

0.21 SECONDS

Explanation:

THE CAR TRAVELS AT A SPEED OF 140M/S AND A DISTANCE AS THE PREVIOUS = 3M THEREFOR S=D/T, T=D/S= 3/140= 0.12 SEC

#a

Now

[tex]\\ \tt\Rrightarrow Q=\dfrac{I}{t}[/tex]

[tex]\\ \tt\Rrightarrow Q=\dfrac{76.2\times 10^{-3}}{624}[/tex]

[tex]\\ \tt\Rrightarrow Q=0.122\times 10^{-3}[/tex]

[tex]\\ \tt\Rrightarrow Q=122\times 10^{-6}C[/tex]

[tex]\\ \tt\Rrightarrow Q=122\mu C[/tex]

#b

Answer:

true

Explanation:

look it up

hope this helped u ;)

Answer:

True

Explanation:

Took The Test

Answer:

true.

Explanation:

The forces on a thrown ball after it leaves the thrower's hand are the force of gravity .

Answer:

the after image is showing precipitation. i dont know what the before image is though.

Explanation:

Answer:

To minimize area which in turn increases pressure

Answer:

if an astronaut weighs 981 N on Earth and only 160 N on the Moon, then what is his mass on the Moon?

ANSWER 256n

The mass of the astronaut on the moon as compared to the earth will be  [tex]M_m=97.85\ lg[/tex]

The mass of any substance or body is defined as how much quantity of matter is present.

Now it is given in the question:

Weight of the astronaut on earth  [tex]W_E=981\ N[/tex]

Weight of the astronaut on earth  [tex]W_M=160\ N[/tex]

The mass of the astronaut on the moon will be calculated as:

Weight on the moon will be  given as:

[tex]W_M=M_M\times g_m[/tex]

Weight on the earth will be given as:

[tex]W_E=M_E\times g_e[/tex]

The ratio of the gravity of the earth to the moon is given as

[tex]\dfrac{g_e}{g_m} =\dfrac{9.81}{1.62} =6[/tex]

The mass of the earth will be calculated as

[tex]W_E=M_E\times ge[/tex]

[tex]M_E=\dfrac{981}{9.81} =100\ kg[/tex]

Now taking the ratio of the weight of the earth to the moon :

[tex]\dfrac{W_E}{W_M} =\dfrac{M_E\times g_e}{M_M\times g_m}[/tex]

[tex]M_M= \dfrac{W_M\times M_E}{W_E} \times \dfrac{g_e}{g_m}[/tex]

Now by putting the value in the formula we get;

[tex]M_M=\dfrac{160\times 100}{981} \times 6=97.85\ kg[/tex]

Thus the mass of the astronaut on the moon as compared to the earth will be  [tex]M_m=97.85\ lg[/tex]

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Answer:

3.34x10*5

Explanation:

this is just a example.

take 3 sig.fig

the amount of work that the student needs to do in order to climb the stairs is 3185 J

Work can be defined as the product of force and distance.

To calculate the amount of work that the student needs to do in order to climb the stairs, we use the formula below

Formula:

Where:

From the question,

given:

Substitute these values into equation 1

Hence, the amount of work that the student needs to do in order to climb the stairs is 3185 J.

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Answer:

gravity is a natural phenomenon in which objects with mass,energy,light are attracted to one another

Answer:

Am doing well am fine thank you

Answer:

When one side of the tug-of-war rope has a larger net force than the other side then the basket in the middle will be pulled to whichever side has a larger net force.

Explanation:

When one side of the tug-of-war rope has a larger net force than the other side then the basket in the middle will be pulled to whichever side has a larger net force.

Answer:

nothing lol

Explanation:

nothing changes in a physical change, particles stay the same unless a chemical change happens

Answer:

6 m/s

Explanation:

12m / 2s = 6 m/s

Hope that's the answer you seek.

The time required for the block to travel or complete it's half-cycle is 0.05s

Data;

This is the maximum displacement of a body from it's mean position.

Assuming a system start from its mean position i.e mean initial position and go to A/2 towards right and then back to his mean position after going through -A/2 then it is said to have completed one cycle. If the block oscillate only between -A/2 to A/2 then it will complete half cycle then it's time period will be 0.05 sec.

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[tex]\longrightarrow \sf Indigo [/tex]

The color and their corresponding wavelength ranges are given in the table below.

[tex]\begin{gathered}\begin{gathered}\boxed{\begin{array}{c|c} \bf colour & \bf wavelength\\ \\ \frac{\qquad \qquad}{} & \frac{\qquad \qquad}{} \\ \sf red & \sf 650 - 700 \\ \\ \sf orange & \sf 600 - 650 \\ \\ \sf yellow & \sf \: 580 - 600 \\ \\ \sf green & \sf 550 - 580 \\ \\ \sf cyan & \sf 500 -550 \\ \\ \sf \: blue& \sf450 - 500\\ \\ \sf indigo & \sf 425- 450\\ \\ \sf violet & \sf 380 - 425 \end{array}} \\ \end{gathered}\end{gathered}[/tex]

After observing the table, we can predict that wave is most likely appear Indigo.

Note- The wavelengths boundaries between the colours are not very sharp and they form a continuous spectrum.

Answer:d

Explanation:

Answer:

D

Explanation:

Furthermore, the magnetic pole near earth's geographic north pole is actually the south magnetic pole. When it comes to magnets, opposites attract. This fact means that the north end of a magnet in a compass is attracted to the south magnetic pole, which lies close to the geographic north pole.

Answer:

Gravity stronger closer to the core of the earth

Explanation:

The gravity applied to the feet is stronger than to the upper part of the body for example the brain because of the distance it is between the body part and the core of the earth where the gravity force is pulling towards. Even though the difference between the gravity force between the brain and the feet is minimal it is still a greater force at the feet than at the brain

Answer:

yes

Explanation:

yes to my best known knowledge I am thinking that your answer is correct

Answer:

The ball has potential energy just like the Longbow has when it is stretched. The other aspect of energy that the bow portrays is kinetic energy. Kinetic energy is the energy of motion. When the string is released, the potential energy is converted to kinetic energy in movement of the arrow

Explanation:

Answer:

It has potential energy not kinetic

Explanation:

Answer:

60m/s

Explanation:

v=u+at

v=36+(2×12)

v=36+24

v=60m/s