If a 50 kg box was accelerated to 10 m/s2, how much force was used?

At the instant shown, the six scenarios can be ranked in terms of the magnitude of current in the light bulb as follows:

1) Scenario 1 - Here, the battery is directly connected to the light bulb without any other resistors in the circuit. Therefore, the current flowing through the bulb will be the maximum among all the scenarios.

2) Scenario 3 - In this case, the battery is connected to the light bulb through a resistor. However, the resistance is less compared to other scenarios, so the current will be higher than in other cases.

3) Scenario 4 - Here, the battery is connected to the light bulb through a higher resistance compared to scenario 3. This will result in a lesser current in the bulb.

4) Scenario 5 - In this scenario, the battery is connected to the light bulb through a much higher resistance than in the previous two scenarios. Therefore, the current flowing through the bulb will be lower.

5) Scenario 6 - Here, the battery is connected to the circuit in such a way that the current will bypass the light bulb. Therefore, the bulb will not light up and the current flowing through it will be zero.

6) Scenario 2 - This scenario is similar to scenario 6 where the switch is open, so the circuit is not complete, and hence there will be no current flowing through the light bulb.

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The opposite direction is exerted on the object, so that the forces camel The object is is brought to rest rapidly.

Direction is a term used to describe the way something is moving or pointing. It is often used in reference to the orientation of objects, or the path something is taking. Direction can be described in terms of three-dimensional coordinates, including length, width, and height. Direction can also be described in terms of four cardinal directions (north, south, east and west), and eight ordinal directions (north-east, south-east, south-west and north-west). Direction can also be expressed in terms of angles and compass bearings. Direction is an important part of navigation, and is used to calculate distances. It is also essential for planning journeys and understanding the environment.

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Answer:

the answer is D metal resting

Explanation:

I just think that because if you treasure can that's physical charge by dropping where you create a physical charge melting and Ice Cube might be 1 but I feel like metal resting is more likely

The voltage drop across the capacitor (Vc) is approximately 25.93 units when Tc is 1.400, Fc is 1.300, and the quantity is 50 units.

The voltage drop across the capacitor (Vc) can be found using the formula Vc = Tc / (Tc + Fc) * Quantity, where Tc represents the total capacitance and Fc represents the fractional capacitance. In this case, Tc is given as 1.400, Fc is given as 1.300, and the quantity is 50 units. Plugging these values into the formula, we have:

Vc = 1.400 / (1.400 + 1.300) * 50

Simplifying the expression inside the parentheses:

Vc = 1.400 / 2.700 * 50

Dividing 1.400 by 2.700:

Vc = 0.5185 * 50

Calculating the final result:

Vc ≈ 25.93

Therefore, the voltage drop across the capacitor (Vc) is approximately 25.93 units.

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Given,

The initial eastward velocity of the airplane. v₁=90 km/hr

The speed of the wind from the north, v₂=40 km/hr

In vector notation, the velocity of the airplane is

And the velocity of the wind in vector notation is

Thus the resultant velocity is,

The magnitude of this velocity, i.e., resulting speed of the airplane is

The direction of the resulting velocity of the airplane is,

The negative sign in the angle is given in the clockwise direction from the positive x-axis.

Thus the speed of the plane is 98.5 km/hr and the direction is -24°

\(Work=Force \: × \: displacement \\ => W=Fs \\ \\ Given, \\ Force=25 \: N \\ Displacement=2m \\ \\ so \: work = 25 \: N \: \times 2m \\ = > work = 25kgm {s}^{ - 2} \times 2m \\ = > work = 50kg {m}^{2} {s}^{ - 2} \\ = > work = 50J\)

This is the answer.

Hope it helps!!

A weightlifter must exert 25 Newtons of force to lift a set of barbells 2 meters off the ground, the weightlifter did 50 Nm of work on the barbells when he lifted them. The correct option is A.

To calculate the work done by the weightlifter in lifting the barbells, we can use the formula:

Work = Force × Distance

Here, it is given that:

Force = 25 Newtons

Distance = 2 meters

Substituting the values into the formula:

Work = 25 N × 2 m

Calculating the multiplication:

Work = 50 Nm (Newton-meters)

Thus, the weightlifter did 50 Nm of work on the barbells when he lifted them, the correct answer is A. 50 Nm.

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Answer:

A: dense and solid

E: located near a star

Explanation:

Answer:

A: dense and solid

E: located near a star

Explanation:

Work by gravity plus work by water equals 0 or 2692 = F *1.10 or F = 2447 Newtons

As work-energy, you could:

Since she began and concluded at rest, her initial and final K are both zero. Total work = ΔK.

Gravity: force * distance

mgΔh = 67 * 9.8 * 4.10 = 2692 Joules.

Force * Dist =- F *1.10

Work by gravity + work by water  =  0

2692 - F *1.10   = 0  

2692  =  F *1.10    

F = 2447 Newtons!

Because gravity continues to affect her even when she is submerged, take note of the total distance she travels: 3.00 + 1.10!

Work now being done by the water: Because of the force pushing up on her as she descends, the equation  is negative. Work is negative when the directions of force and distance are in opposition.

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Answer:

in a direction parallel to the direction that the wave moves

Explanation:

Answer:

parallel to the direction....

The amplitude, restoring force and speed of an object undergoing simple harmonic  motion may have maximum magnitudes at the same instant of time.

Simple harmonic motion is a regular repeating motion. The acceleration of a simple harmonic motion is always directed towards the center of the motion.

There are three  quantities related to the object that can have maximum values at the same time and these are;

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Answer: "Surface tension is a film of a liquid caused by the attraction of the particles in the surface layer by the bulk of the liquid, which tends to minimize surface area."

Hope this helps!

Answer:

Explanation:

Surface tension is the property of a liquid surface. It is an effect where the surface of the liquid is strong.

example - small insects can walk on water as they do not have enough weight to penetrate it.

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plz mark as brainliest!!!!!!!

Answer:

Measurement is the assignment of a number to a characteristic of an object or event

Explanation:

Answer:

Measurement is the assignment of a number to a characteristic of an object or event, which can be compared with other objects or event

The detergent solution used for washing dishes must be at least 110°F (option c) to effectively remove grease and bacteria.

To properly clean dishes, it is important to use a detergent solution at a certain temperature. The minimum temperature requirement ensures that the detergent is effective in breaking down grease and removing bacteria from the dishes.

The temperature of 110°F is often recommended as it provides the ideal balance between effectiveness and safety. At this temperature, the detergent can effectively dissolve and remove oily residues, food particles, and germs from the dishes. It helps to break down and emulsify fats and oils, facilitating their removal during the washing process.

Using hotter water can enhance the cleaning process by improving the detergent's ability to dissolve and remove contaminants. However, it is essential to strike a balance to prevent potential risks such as scalding or damage to delicate items. Therefore, maintaining a minimum temperature of 110°F ensures efficient cleaning while minimizing safety concerns.

It's worth noting that specific dishwasher models or dishwashing guidelines may recommend slightly different temperature ranges. It is advisable to follow the manufacturer's instructions or consult the dishwasher manual for the most suitable temperature settings for optimal dishwashing results.

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i. The gravitational force between the earth and sun can be obtained as follow:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.987×10²⁴ × 1.989×10³⁰) / (1.5×10¹¹)²

F = 3.53×10²² N

Thus, the gravitational force between the earth and sun is 3.53×10²² N

ii. The gravitational force between the earth and moon can be obtained as follow:

F = GM₁M₂ / r²

F = (6.67×10¯¹¹ × 5.987×10²⁴ × 7.347×10²²) / (3.844×10⁸)²

F = 1.99×10²⁰ N

Thus, the gravitational force between the earth and moon is 1.99×10²⁰ N

Comparison = G₁ / G₂

G₁ / G₂ = 3.53×10²² / 1.99×10²⁰

G₁ / G₂ = 177

Cross multiply

G₁ = G₂ × 177

Thus, we can say that the gravitational force between the earth and sun is 177 times bigger than the gravitational force between the earth and moon

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Write the data down:

i = 2.5 A

V = 120 V

t = 1.2 h

First we must calculate electric power of the computer:

P = i x V

P = 2.5 x 120

P = 300 W

Now transform the time in minutes and then in seconds:

1.2 h = 60 min x 1.2 h = 72 minutes

72 minutes x 60 s = 4,320 s

So the energy cost will be:

E = P x t

E = 300 x (4,320)

E = 1,296,000 J

or if we write using scientific notation we get:

Open clusters, O and B stars, globular clusters and gas and dust lie in the halo of our galaxy, therefore the correct option is (E) all of the above

The halo of our galaxy contains a diverse array of objects, including open clusters, O and B stars, globular clusters, and gas and dust. Open clusters are groups of relatively young stars that formed from the same molecular cloud, while globular clusters are much older and contain hundreds of thousands of stars.

O and B stars are massive, hot stars that emit large amounts of ultraviolet radiation, which can ionize surrounding gas clouds. Gas and dust in the halo can form new stars or be illuminated by nearby stars, producing emission nebulae and other interesting structures.

Therefore, the correct option is (E) all of the above

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The equation "unit revenue times the quantity = fixed costs + variable unit cost times the quantity" (UR * Q = FC + VC * Q) is the correct formula for calculating the break-even quantity. Therefore, the statement "rq = fc vq" is false.

The break-even quantity is the point at which total revenue equals total costs, resulting in neither profit nor loss. To calculate the break-even quantity, we use the equation UR * Q = FC + VC * Q, where UR represents the unit revenue, Q represents the quantity, FC represents the fixed costs, and VC represents the variable unit cost.

In this equation, the left side (UR * Q) represents the total revenue, which is the product of the unit revenue and the quantity sold. The right side (FC + VC * Q) represents the total costs, which is the sum of the fixed costs and the variable costs (variable unit cost times the quantity).

By equating total revenue and total costs, we can solve for the break-even quantity (Q) by rearranging the equation.

The formula "rq = fc vq" does not accurately represent the break-even quantity equation and is, therefore, false. The correct equation for calculating the break-even quantity is UR * Q = FC + VC * Q.

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Answer:

A or B(the answers)

Explanation:

they seem like the most right

Answer:

I'm pretty sure it's b

Explanation:

Answer: 81 1/2 moons would be needed to equal the amount of mass of Earth

Explanation:

Some benefits of using a scale model by planetary scientists are:

Scientists measure the distance between planets using a variety of methods, including triangulation, radial velocity method and scale model method. Scientists use triangulation to determine the distance from Earth to other planets. They observe the planet from two different positions on Earth and use the angles of observation to calculate the planet's distance.

Radial Velocity Method uses the Doppler shift of a planet's light to determine its distance. Scientists can determine how fast a planet is moving towards or away from Earth and use this information to calculate its distance.

Scale model method can be easily visualized and allows for easy comparison between different parts of the system. The model can be easily shared and discussed with colleagues, helping to build consensus and develop a deeper understanding of the system as a whole.

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The impulse required to stop the 10-kg bowling ball moving at 7.0 m/s is -70 kg m/s.

The impulse required to stop a moving object can be calculated using the principle of momentum conservation.

The formula for impulse can be given as:

I = Δp = mΔv

where I is the impulse, Δp is the change in momentum, m is the mass of the object, and Δv is the change in velocity.

In this case, the initial velocity of the 10-kg bowling ball is 7.0 m/s and it needs to be brought to a stop, so its final velocity is 0 m/s.

Therefore, the change in velocity can be given as:

Δv = vf - vi = 0 - 7.0 m/s = -7.0 m/s

Substituting the values in the formula for impulse, we get:

I = Δp = mΔv = 10 kg × -7.0 m/s = -70 kg m/s

So, the impulse required to stop the 10-kg bowling ball moving at 7.0 m/s is -70 kg m/s. The negative sign indicates that the impulse is acting in the opposite direction to the velocity of the ball.

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Answer:

A

Explanation:

I took that test

Answer:

D

Explanation:

Through the process of cellular respiration, Energy in food is converted into energy that can be used by the body.

During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, energy is transferred  to ATP  

One end of the taut cable is pulled, causing a transverse pulse to be created. In 0.835 seconds, the pulse travels four times down the cable and four times back then the tension in the ethernet cable is determined as 67 N.

It is given to us that -

Ethernet cable is 3.90 m long => l = 3.90 m

and has a mass of 0.190 kg => m = 0.190 kg

It is also given that the transverse pulse makes four trips down and back along the cable in 0.835 s.

=> time taken, t = 0.835 s

We have to find out the tension in the cable.

We know that

Speed = Distance/Time ----- (1)

Since the transverse pulse applied on the ethernet cable makes four trips down and back along the cable, the total distance travelled by the pulse = 4 * (2l)

Now, using equation (1) we can find out the speed of the pulse by -

\(v = \frac{4*2*3.90}{0.835} \\= > v = 37.36\) m/s ---- (2)

We also know that the mass density of the pulse can be determined by the formula -

μ = \(\frac{m}{l}\) ------ (3)

where,

m = mass of the cable

l = length of the cable

Substituting the given values of mass and length of the cable in equation (3), we can find out the mass density of the pulse as -

μ = \(\frac{m}{l} = \frac{0.190}{3.90} = 0.048\) kg/m ------ (4)

We also know that the tension in the cable can be represented by the formula -

T = μ\(v^{2}\)  ----- (5)

Substituting the values of v and μ from equations (2) and (4) respectively, we can find out the tension in the cable as -

T = μ\(v^{2}\)

=> T = 0.048 * \((37.36)^{2}\)

=> T = 67 N

Thus, the tension in the ethernet cable is determined as 67 N.

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The net force on the passenger is 770 N.

To find the net power following up on the traveler, we really want to utilize Newton's Second Law of Movement, which expresses that power is equivalent to mass times speed and acceleration increase (F = mama).To begin with, we really want to change over the speed from km/h to m/s. We can do this by isolating 32.5 km/h by 3.6, which gives us 9.03 m/s. Then, we can track down the speed increase by isolating the adjustment of speed when span:

a = (9.03 m/s)/(5.70 s) = 1.58 \(m/s^2\)

Presently we can utilize Newton's Second Regulation to track down the net power:

F = mama = (78.5 kg)(1.58 \(m/s^2\)) = 123.93 N

Subsequently, the net power following up on the 78.5 kg traveler in the vehicle is around 123.93 N.

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A 5.25 kg block starts at the top of a 16.1 m long incline that has an angle of 10∘ to the horizontal.

a)what was the velocity of the 5.25kg block at the bottom of the ramp? v = _ 6.73 m/s.

b)how much kinetic energy was lost in the collision? δke = _ 68.22 J._ m/s

To solve this problem, let’s break it down into three parts:

a) To find the velocity of the 5.25 kg block at the bottom of the ramp, we can use the principle of conservation of mechanical energy. The initial potential energy of the block at the top of the ramp is equal to the final kinetic energy of the block at the bottom of the ramp. Therefore:

M1 * g * h = (m1 + m2) * v^2 / 2

Where m1 is the mass of the 5.25 kg block, g is the acceleration due to gravity, h is the height of the incline, m2 is the mass of the 7.11 kg block, and v is the velocity of the 5.25 kg block at the bottom of the ramp.

Plugging in the values, we have:

5.25 kg * 9.8 m/s^2 * 16.1 m * sin(10°) = (5.25 kg + 7.11 kg) * v^2 / 2

Solving for v, we get:

V ≈ 6.73 m/s

Therefore, the velocity of the 5.25 kg block at the bottom of the ramp is approximately 6.73 m/s.

b) To find the amount of kinetic energy lost in the collision, we can use the principle of conservation of linear momentum. Before the collision, the total momentum is given by the sum of the individual momenta of the blocks. After the collision, the blocks stick together and move as one mass. Therefore:

(m1 * v1 + m2 * v2)_initial = (m1 + m2) * v_final

Where m1 and v1 are the mass and velocity of the 5.25 kg block, m2 and v2 are the mass and velocity of the 7.11 kg block, and v_final is the common velocity of both blocks after the collision.

Since the 5.25 kg block starts from rest at the top of the ramp, v1 is 0. Plugging in the values and solving for v_final:

(5.25 kg * 0 + 7.11 kg * v2)_initial = (5.25 kg + 7.11 kg) * v_final

7.11 kg * v2 = 12.36 kg * v_final

After the collision, the two blocks stick together, so their final velocity is the same. Therefore:

V_final = v2

The amount of kinetic energy lost in the collision is:

ΔKE = (1/2) * (m1 * v1^2 + m2 * v2^2) – (1/2) * (m1 + m2) * v_final^2

Since v1 is 0 and v_final = v2:

ΔKE = (1/2) * (m2 * v2^2) – (1/2) * (m1 + m2) * v2^2 68.22 J.

Plugging in the values:

ΔKE ≈ 68.22 J

Therefore, the kinetic energy lost in the collision is approximately

c) To find how far the blocks slide to the right on the frictional surface before stopping, we can use the work-energy principle. The work done by the friction force is equal to the change in kinetic energy:

Work = ΔKE

The work done by friction is given by:

Work = force_friction * distance

The force of friction can be calculated using the equation:

Force_friction = μk * (m1 + m2) * g

Where μk is the coefficient of kinetic friction

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Answer:

1176 N

Explanation:

We are given that

Mass of car=m1=1280 kg

Mass of trailer=m2=350 kg

Car exerts a horizontal force against the ground =3.6x103N

Coefficient of friction=0.15

We have to find the force exerted by car  on the trailer.

F={m1+m2)a+Ff

F={m1+m2)a+m2g

g=9.8m/s2

Substitute the values then we get

3.6x103=(1280+350a=0.15x350x9.8

3.6x103=1630a+514.5

1630a=3600-514.5=3085.5

a=3085.5/1630=1.89m/s2

Force exert on the trailer

F=m2a+m2g

F=350(1.98)=0.15x350x9.8

F=1176N

Hence, the car exerts force on the trailer=1176 N

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Answer:

20 = 30 / t1

t1 = 3/2

40 = 30 / t2

t2 = 3/4

average speed = total distance / total time taken

= 30 + 30 / 3/2 + 3/4

= 60 /9/4

= 60 × 4/9

= 26.667

No, the sun cannot explain global warming. Global warming is a phenomenon in which the temperature of the Earth's surface and atmosphere is rising continuously due to human activities such as deforestation, burning of fossil fuels, and industrialization.

This increase in temperature cannot be explained only by an increase in solar radiation.There are several factors which contribute to global warming, including greenhouse gases such as carbon dioxide, methane, and water vapor. These gases trap heat in the Earth's atmosphere, which causes the planet's temperature to rise. The sun's radiation does contribute to global warming, but it is not the main cause.

i) To calculate the increase in solar radiation that would cause the Earth to warm up by 1 K, we can use the following formula:ΔS = ΔT / αWhere ΔS is the increase in solar constant, ΔT is the increase in temperature, and α is the Earth's albedo (reflectivity).α = 0.30 is the standard value used for the Earth's albedo.ΔS = ΔT / αΔS = 1 K / 0.30ΔS = 3.33 W/m2So, to explain the increase in temperature of 1 K over the last hundred years, the solar constant would need to increase by 3.33 W/m2.

ii) The observed fluctuation of the solar constant over the past 400 years has been around 0.1% to 0.2%. This is much smaller than the 3.33 W/m2 required to explain the increase in temperature of 1 K over the last hundred years. Therefore, it is unlikely that the sun is the main cause of global warming.

The sun cannot explain global warming. While the sun's radiation does contribute to global warming, it is not the main cause. The main cause of global warming is human activities, particularly the burning of fossil fuels, which release large amounts of greenhouse gases into the atmosphere.

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