A 15kg block of frozen water is being acted upon
by two forces as shown. Which of the following
diagrams will have the smallest net acceleration?
A)
F2=10N
F =28N
B)
F=100N
Fi=90N
0)
Fi=4N
F2=12N
D)
Fi=150N
F2=140N​

Using the left hand rule, if current points up and the field is toward you,  the  motion points up.

The left hand rule states that if the thumb, the fore finger and the middle finger are held mutually perpendicular to each other, the thumb points in the direction motion, the middle finger points in the direction of current while the fore finger points in the direction of the magnetic field.

Thus using the left hand rule, if current points up and the field is toward you,  the  motion points up.

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The dry air can break down if the electric field strength exceeds 3.0 × 106 V/m. An explanation for this is that when an electric field is applied to a gas, it can cause the gas molecules to become ionized, creating free electrons and ions.

In dry air, the breakdown voltage, or the minimum electric field strength required for ionization to occur, is typically around 3.0 × 106 V/m. If the electric field strength exceeds this threshold, the ionization process can become self-sustaining and lead to a spark or discharge. This can be a safety concern in situations where high voltage equipment is in use, as the resulting electrical arcs can cause damage or injury.

The electric field strength in the atmosphere is a measure of the force acting on charged particles. When the electric field strength exceeds a certain threshold, it can cause the breakdown of air molecules, leading to electrical discharge or sparking. In the case of dry air, this threshold is 3.0 × 10^6 V/m. When the electric field strength surpasses this value, the air molecules can't withstand the force anymore, and breakdown occurs.

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Explanation:

F = 40 N

d = 3 m

Work

W = Fd

where: W - work, J

F - force, N

d - distance, m

W = Fd

W = (40 N)(3 m)

W = 120 Nm or 120 J

Answer:

SORRY I CAN'T DO FOR YOU BECAUSE I DON'T KNOW WHERE IS THE QUESTION

Explanation:

Answer:

B

Explanation:

-1 e so the atomic number should increase so,

B. Np

Larry Page, real name Lawrence Edward Page, is a computer scientist and entrepreneur from the United States who co-founded Goo-gle, one of the most well-known websites on the Internet, with Sergey Brin on March 26, 1973 in East Lansing, Michigan.

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By resolving forces into their components and adding them together, you can determine the resultant force in the x and y directions without knowing the actual variables involved.

To find the summation of Fx and summation of Fy without knowing the specific variables, you need to have information about the forces acting on an object in the x and y directions. If you have the magnitudes and directions of individual forces, you can use vector addition to determine the resultant force in each direction.

Here's a general approach to finding the summation of Fx and Fy:

Identify the forces: Start by identifying all the forces acting on the object and their directions. Each force can be represented as a vector with a magnitude and direction.

Resolve forces: If the forces are not already given in the x and y directions, you need to resolve them into their x and y components. Use trigonometry (sine and cosine) to determine the components of each force along the x-axis (Fx) and the y-axis (Fy).

Sum the components: Add up all the individual components of forces acting in the x-direction to find the summation of Fx. Similarly, add up all the individual components of forces acting in the y-direction to find the summation of Fy.

Summation of Fx = F1x + F2x + F3x + ...

Summation of Fy = F1y + F2y + F3y + ...

Combine components: If there are forces acting at an angle to the x and y axes, you can use the Pythagorean theorem and trigonometry to find the resultant force in each direction.

Summation of Fx = √(F1x^2 + F2x^2 + F3x^2 + ...) (taking into account both magnitudes and directions)

Summation of Fy = √(F1y^2 + F2y^2 + F3y^2 + ...) (taking into account both magnitudes and directions)

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Answer:

Bending your knees

Explanation:

Beacuse when you fall down we try to don't hurt the face so we bend knee

The average force exerted on the ball by the bat is 875 N.

It is important to note that force can be calculated using the formula, F = m x a, where F is force, m is mass, and a is acceleration. Therefore, to calculate force, we need to determine the acceleration of the ball.To determine acceleration, we use the formula a = v / t, where a is acceleration, v is velocity, and t is time. The velocity of the ball is 35 m/s, and the time it takes to reach that velocity is 0.02 seconds. Therefore, the acceleration of the ball is 35 / 0.02 = 1750 m/s². To calculate force, we use the formula F = m x a. The mass of the ball is 0.2 kg, and the acceleration is 1750 m/s². Therefore, the average force exerted on the ball by the bat is 0.2 x 1750 = 350 N. Therefore, the average force exerted on the ball by the bat is 875 N.

A force that is applied to an object by a person or another object is known as an applied force. There is an applied force acting upon the object if someone is pushing a desk across the room. The person's force applied to the desk is the applied force. Caution: Mass and weight are not the same.)

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Hi there!

We can use the work-energy theorem to solve.

Recall that:
\(E_i = E_f\)

The initial energy equals the final energy (Conservation of Energy). However, we must take into account energy dissipated due to friction in this instance.

The energy lost due to friction is equivalent to the work done by friction. Recall the following:

The work due to a force is:
\(W = F \cdot d \\\)

Since the displacement is in the same direction as the force, the dot-product becomes Fd.

The work due to friction then becomes:

\(W_f = \mu mgdcos\theta\)
The work due to friction is SUBTRACTED from the initial potential energy.

Initial energy = GPE = mgh

Final energy = KE

Therefore:

\(\boxed{mgh - \mu mgdcos\theta = KE}\)

Answer:

Explanation:

In projectile,

Maximum height = \(\frac{u^{2}sin^{2} \theta }{2g}\) and range = \(\frac{u^{2}sin2\theta }{g}\)

u = velocity of the body

\(\theta\) = angle of launch

g = acceleration due to gravity

If the range equals the maximum height in an ideal projectile launch on a horizontal plane, this means;

\(\frac{u^{2}sin^{2} \theta }{2g} = \frac{u^{2}sin2\theta }{g}\)

since \(sin2\theta = 2sin\theta cos\theta\)

\(\frac{u^{2}sin^{2} \theta }{2g} = \frac{u^{2}2sin\theta cos\theta }{g}\\\frac{sin\theta}{2} =2cos\theta \\sin\theta = 4cos\theta\\\frac{sin\theta}{cos\theta} = 4\\tan\theta = 4\\\theta = tan^{-1} \\4\theta = 75.9^{0}\)

The angle at which the range equals the maximum height in an ideal projectile launch on a horizontal plane is approximately 76°

An unbalanced force acting on an object results in the object's motion changing. The object may change its speed (speed up or slow down), or it may change its direction. Friction is a force that resists the motion or the tendency toward motion between two objects in contact with each other.

motion

Answer:

motion. FILLER FILLER FILLER

Astronomers now know that surrounding the main body of our galaxy (which our various kinds of telescopes have shown to us) and our fainter halo of stars there is: a spherical halo of dust and gas.

There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms. The Milky Way's center would take you about 25,000 years to reach, even if you could move at the speed of light (300,000 km/s, or 186,000 mph).

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The momentum of the 5kg object before the collision is; 50kgm/s.

The momentum of a body is mathematically evaluated as the product of its mass and velocity of motion.

According to the question;

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An average velocity can be defined as the total distance covered by a physical object divided by the total time taken.

Mathematically, you can find average velocity (Vaverage) from acceleration (a) and time (t) by using this formula:

Average velocity = acceleration × time

Vaverage = at     .......equation A.

Also, you can find distance (d) from average velocity (Vaverage) and time (t) by using this formula:

Distance = average velocity × time

d = vt        .......equation B.

Now, putting the two equations together and substituting the Vaverage term in equation B:

d = (at) × t

d = at²

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Complete Question:

A. How do you find average velocity (Vaverage) from acceleration (a) and time (t)?

B. How do you find distance (d) from average velocity (Vaverage) and time (t)?

C. Now put the two equations together. Substitute your result in equation A for the (Vaverage) term in equation B. Your final equation should only have d, a, and t terms.

Answer:

Yes,in fact visible 'light' is a form of radiation, which can be defined as an energy that travels in the form of electromagnetic waves. It can also be described as a flow of particle-like 'wave-packets', called photons, that travel constantly at the speed of light (about 300 000 kilometres per second).

Explanation:

Answer:

go to the vault

Explanation:

car's maximum cornering speed on a rainy day when the coefficient of static friction has been reduced by 50% is 27.58 m/s

Car's maximum speed at dry Sunny day,

Vs = √μrg = 39 m/s

Speed at rainy day, μ becomes 0.5μ

Vr = √(0.5*μ*r*g) =√(0.5) * (39) = 27.57716

Vr = 27.58 m/s

An object experiences static friction when a force is applied to it; as a result, the object resists the applied force and stays at rest until static friction is removed. In kinetic friction, the frictional force opposes an object's motion. An item is kept at rest by the force of static friction. The phrase "static friction" can be defined as "the friction people perceive when they attempt to move a stationary object on a surface, but without actually causing any relative motion in between  surface and the body it is on. A force acting in opposition to the direction of a moving body on the surface is felt.

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Most star formation in the Milky Way Galaxy today occurs in the Galactic spiral arms. These arms are regions of high density and concentration of gas and dust, which are necessary for the formation of stars.

As the Milky Way rotates, the spiral arms move through the Galaxy, sweeping up gas and dust and triggering the formation of new stars. The Galactic center is also a region of active star formation, but the conditions there are much more extreme and only certain types of stars can form. In contrast, the spiral arms offer a more conducive environment for a wider range of stars to form. Overall, star formation in the Milky Way is a complex and ongoing process, influenced by a variety of factors such as density, temperature, and chemical composition of the interstellar medium. Studying the locations and characteristics of star formation in the Galaxy can provide valuable insights into the evolution of our Galactic neighborhood and the formation of our own Solar System.

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If a scientist discovers that an atom with a mass number of 10 contains five electrons, then according to this scenario,  the atom's atomic number would be 5, therefore the correct answer is option 2.

The total number of protons present in an atom is known as the atomic number of that atom. The atomic number has no correlation either with the number of neutrons or the number of electrons present inside an atom.

If a scientist discovers that an atom with a mass number of 10 contains five electrons, then according to this scenario.

Thus, the atom's atomic number would be 5, therefore the correct answer is option 2.

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Answer:

As the runner was travelling for 9 seconds, he covered a distance of 99.9 metres. 9 seconds x 9 seconds  = 81 seconds squared, and the runner covers roughly 1.23 metres in distance every second squared.

Explanation:

Answer:

The science of classifying living things is called taxonomy. Scientists classify living things in order to organize and make sense of the incredible diversity of life. Modern scientists base their classifications mainly on molecular similarities. They group together organisms that have similar proteins and DNA.

Explanation:

The science of classifying living things is called taxonomy.

Answer:

I'm not sure but I think it's 35-39

\(\\ \sf\longmapsto 300-70.5=229.5kJ\)

We know

\(\boxed{\sf Efficiency=\dfrac{Used\:Energy}{Supplied\:Energy}\times 100}\)

\(\\ \sf\longmapsto Efficiency=\dfrac{229.5}{300}\times 100\)

\(\\ \sf\longmapsto Efficiency=\dfrac{229.5}{3}\)

\(\\ \sf\longmapsto Efficiency=76.5\%\)

The velocity of the oscillator at t = 1.0s is approximately 0.006 m/s, and the acceleration of the oscillator at t = 2.0s is approximately -1.381 m/s².

In a simple harmonic oscillator, position, velocity, and acceleration are related to each other. The position function is given as x(t) = 0.15cos(πt + π/7), with x in meters and t in seconds.
To find the velocity, we need to take the first derivative of the position function with respect to time:
v(t) = dx/dt = -0.15πsin(πt + π/7).
At t = 1.0s, the velocity is:
v(1) = -0.15πsin(π(1) + π/7) = -0.15πsin(8π/7) ≈ 0.006 m/s.
To find the acceleration, we need to take the second derivative of the position function with respect to time:
a(t) = d²x/dt² = -0.15π²cos(πt + π/7).
At t = 2.0s, the acceleration is:
a(2) = -0.15π²cos(π(2) + π/7) = -0.15π²cos(9π/7) ≈ -1.381 m/s².

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Answer:

6.3

Explanation:

Answer:

here's the answer to your question

The correct answer is centrifuge.

Your complete blood is drawn out during an apheresis procedure, which is used to donate platelets. Your blood is spun in a centrifuge to separate your plasma, platelets, and red blood cells. As the blood is divided, the heavier reds cells drop to the bottom and are given back to you.

Between the liquid plasma and the platelets that are tracked into a small pouch that is wrapped around the centrifuge cylinder as the liquid plasma rises. When you donate blood, your spleen releases stockpiled platelets into your bloodstream in an effort to stop the bleeding.

As a result, more platelets and plasma are collected, enabling you to donate one, two, or even three doses of platelets in a single visit. Your healthy bone marrow quickly starts producing additional platelets from stem cells to replace those that have been given while this is happening.

Since only one donor is used for the donation, platelet donors are able to provide patients with a greater amount and higher-quality platelets to aid in their fight for survival.

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