9. You are heating a piece of glass and now want to pick it up, You should
a. Use a rag or paper towels
b. Pick up the end that looks cooler
c. Use tongs
d. Pour cold water on it

Here, a denotes acceleration, t denotes time, and u and v denote beginning and ultimate velocities, respectively. u = v + at.

       0 m/s = 45 m/s + 7 m/s t t = 6.42 s.

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a) The capacitance of the combination is 1.79 × \(10^-11 F.\)

b) The charge on each sphere is 1.79 ×\(10^-9 C.\)

(a) The capacitance of this combination can be calculated using the formula:

C = Q / V

where C is the capacitance, Q is the charge stored in the spheres, and V is the potential difference between them. Since the spheres are concentric and have no net charge, the charge on each sphere must be equal in magnitude and opposite in sign.

Using the formula for capacitance and the given values, we have:

C = Q / V = (4πε0r1r2) / (r2 - r1)

where r1 and r2 are the radii of the inner and outer spheres, respectively. Substituting the given values, we get:

C = (4πε0 × 5.0 × \(10^-2 m\)× 10.0 ×\(10^-2 m\) / (10.0 × \(10^-2 m\) - 5.0 × \(10^-2 m\)) = 1.79 × \(10^-11 F\)

Therefore, the capacitance of the combination is 1.79 × \(10^-11 F.\)

(b) The charge on each sphere can be calculated using the formula:

Q = CV

where C is the capacitance and V is the potential difference between the spheres. Substituting the given values, we get:

Q = CV = (1.79 ×\(10^-11 F)\) × (100 V) = 1.79 × \(10^-9 C\)

Therefore, the charge on each sphere is 1.79 ×\(10^-9 C.\)

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Answer:

His third law states that for every action (force) in nature there is an equal and opposite reaction. Explanation:

Answer:

His third law states that for every action (force) in nature there is an equal and opposite reaction

Explanation:

In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.

Answer:

i am the guy from the time you asked the question for the first time. after discussing with my colleagues i finally came up with a answer so please give me a like

Explanation:

The answer is that it depends on what you assume happens to the Moon’s orbital period around the Earth.

The equations we use for satellites in basic school physics assume that the satellite mass is negligible compared with Earth. However this isn’t the case with the Moon, which is actually around 1.2% of Earth’s mass. So we need to use more accurate equations.

If we stick with the circular orbit approximation then the equation we need here is this one:

ω2R3=G(M+m)ω2R3=G(M+m) where ω is the orbital angular velocity, R in this case is the distance between Earth and Moon, M the Earth’s mass and mm the Moon’s mass.

The effect of doubling the Moon’s mass mm on this equation is that M+mM+m increases by around 1.2%. So this means that the left hand side of the equation must also increase by 1.2%.

If we take the case of the orbital period and therefore ωω stays the same, then it must be R3R3 that increases by 1.2%, which means that RR the distance increases by around 0.4%. That’s an increase on the nominal distance of 384400 km by around 1500 km.

At the other extreme we could assume that the distance stays the same in which case ω2ω2 must increase by 1.2%, which means that ωω increases by around 0.6%, or put another way the orbital period decreases by around 0.6%. The orbital period is the sidereal lunar month which is 27.3 days, and so this would decrease by around 0.16 days or around 4 hours.

i hope it helps ☺️☺️

Answer:

Here we will assume two things.

His acceleration is constant until he reaches his maximum velocity and then he stops accelerating.

When he leaves the blocks, his velocity is "zero", meaning that the initial velocity is zero.

Then:

For the acceleration of the sprinter we will have a constant, A:

a(t) = A.

for the velocity we need to integrate over time, we will get

v(t) = A*t + v0

Where v0 is a constant of integration, and this is the initial velocity, as we already said, this will be zero, so the velocity equation is:

v(t) = A*t

We know that at t = 7.17 seconds, his velocity is 12.28m/s

then:

v(7.17s) = 12.28m/s = A*7.17s

               12.28m/s/7.17s = 1.71 m/s^2 = A.

The acceleration is: 1.71 m/s^2  for 0 < t < 7.17s

                                  0 m/s^2  for  7.17s < t.

This is because that was his maximum velocity, then after that time he can not accelerate more.

Answer:

Laws are statements about something that's been observed and stated while a theory is an explanation of what's been observed. This connection between them forms a main idea that many people regulate as "what's normal."

Explanation:

Answer:

A hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept, according to Kennesaw State University. ... However, Newton's law doesn't explain what gravity is, or how it works.

for e.g:

The particle theory and Darwin's theory of human origin.

Answer:5mph

Explanation:

Answer: I am pretty sure that you should pick radio waves.

Explanation: The scientist should use radio waves. I think this because you can use the radio waves to analyze the signals from outer space. This will work much better than anything there, to analyze it the best possible.

The best I could do.

Answer:

Location

Explanation:

Potential energy is the energy stored in an object due to its position. The most common type of potential energy - gravitational potential energy - is the energy stored in an object due to its vertical position relative to the ground or some zero level.

"An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position." This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position.

"Energy is the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other forms."

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The wavelength of the microwave, given that it is moving at a speed of 3.6×10⁸ m/s is 3 m (last option)

From the question given above, the following data were obtained:

The wavelength of the microwave can be obtained as shown below:

Velocity (v) = wavelength (λ) × frequency (f)

3.6×10⁸ = wavelength × 1.2×10⁸

Divide both sides by 1.2×10⁸

Wavelength = 3.6×10⁸ / 1.2×10⁸

Wavelength = 3 m

Thus, from the above calculation, we can conclude that the wavelength of the microwave is 3 m (last option)

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If the Southern Cross is used to determine that the south celestial pole appears 40 degrees above the horizon, then the observer must be located at 50 degrees south latitude.

The Southern Cross is a well-known constellation visible in the southern hemisphere. It consists of five stars arranged in the form of a cross, with two points pointing toward the pole. The South Celestial Pole, like the North Celestial Pole, is located directly above the Earth's poles. When viewed from the Earth's southern hemisphere, the South Celestial Pole is the point in the sky around which all the stars appear to revolve. It is necessary to determine the altitude of the South Celestial Pole using the Southern Cross constellation to determine the observer's latitude in the southern hemisphere.

Find the Southern Cross constellation. Determine the point where the long axis of the cross intersects with an imaginary line connecting the two stars that make up the cross's short axis. Follow this imaginary line downward until it meets the horizon. The altitude of this point, as measured from the horizon, is equal to the latitude of the observer. In this case, if the observer determines that the South Celestial Pole is 40 degrees above the horizon, the observer's latitude must be 50 degrees south latitude.

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The object that has zero angular momentum about that axis is the one that is located exactly on the axis. This is because angular momentum is the product of an object's moment of inertia (which depends on its mass and distribution) and its angular velocity.

Since the axis of rotation is perpendicular to the page, the distance of each object from the axis is the same. Therefore, the only factor that affects angular momentum is the mass and velocity of each object. Since all five objects have the same mass and velocity, the only way to have zero angular momentum is to have one object on the axis, which would have zero distance from the axis.
To determine the object with zero angular momentum, we must consider the relationship between angular momentum (L), mass (m), velocity (v), and distance (r) from the axis of rotation. The formula for angular momentum is:

L = m * v * r

An object has zero angular momentum when L = 0. In this case, one of the factors (m, v, or r) must be zero. Since all five objects have mass m and velocity v, the only factor that can be zero is the distance (r). Therefore, the object with zero angular momentum is the one located at point A, where the distance r from the axis of rotation is zero.

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Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Answer:

Well it really depends because he found out about a lot of things in a lot of scientific fields actually. He is known for contributing Pascal's triangle and probability theory. He also invented an early digital calculator and a roulette machine. In the field of physics, Blaise contributed to the study of atmospheric pressure by discovering that vacuums are real and exist in the real world.

Explanation:

Explanation:

Q=msdt

= 2 x 128 x (7-4)

=256 x 3

= 768 J

Answer:

dmakqkwnwj fddfgdddwsf

Answer:

independent variable- concentration of reactants

dependent variable- rate of reaction

Explanation:

A dependent variable is a variable that is placed under test and is measured under the process of a scientific experiment.

An independent variable is a variable that undergoes the change in the experiment performed. This change is done with respect to test the efforts that are observed on the dependent variable.

In the given hypothesis, 'concentration of reactants' is the independent variable and 'rate of reaction' is the dependent variable

A fuse is a short and thin piece of wire of a uniform area of cross section.

Explanation:

A fuse is a safety device in an electric plug or circuit. It contains a piece of wire which melts when there is a fault so that the flow of electricity stops.

The fuse wire is made up of Sn (tin) and Pb (lead) alloy because of its high resistance and low melting.

First attachment shows fuse arrangement normally used in the houses and second attachment shows a cartridge type of fuse that is used mainly in costly appliances of our home like an air conditioner, geyser, etc.

Explanation:

The refractive index of the eye cannot be determined with the information provided.

This refers to the value obtained from the ratio of the speed of light in a vacuum to that in a second medium of greater density.

The refractive index is also equivalent to the velocity of light c of a given wavelength in empty space divided by its velocity v in a substance.

It can be calculated using the formula:

n = c/v.

where,

n = the refractive index of the eye

c = wavelength in empty space

v = the  velocity of light

From the question:

r = 0.78 cm

i = 3 cm

The radius of curvature and the location of the image formed by an object at infinity is related to the eye's optics, but the refractive index also depends on the materials of the various parts of the eye, such as the cornea and lens.

Hence, the refractive index can also vary depending on the specific wavelength of light being considered.

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Answer:

479-480

Explanation:

480 is obvious but i said 478-480 because it will slow down in the air

Answer:

401.6

Explanation:

yw

Answer:

When a net force acts on a body it produces acceleration in body the magnitude of tries acceleration is directly proportional to the net force acting and inversely proportional to the mass of the body

Mathematical form

F=ma

Explanation:

I hope it will help you

Answer: the answer is A

Explanation:

If Boy A exerts a force of 3000 newtons on the box to the right and Boy B exerts a force of 5000 newtons in the opposite direction. then combined force (net force) on the box is 2000 N to the left.

Force is responsible for the motion of an object. it produces acceleration in the body. According to newton's second law force is mass times acceleration i.e. F =ma. Its SI unit is N which is equivalent to kg.m/s². There are two types of forces, balanced force and unbalanced force. When Net force is zero which is called as balanced force.

Given,

F₁ = 3000 N

F₂ = -5000 N

Net Force = F₁ + F₂

Net Force = 3000 N  - 5000 N = -2000N negative sign is for left.

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Explanation:

v = IR

v= 160 R = 2

160 = 2I

2 2

I = 80A

Answer:

307.44 m    (whatever 'm' is)

Explanation:

355 * cos (30) = 307.44

Answer:

the elephant would hit first

Explanation:

the elephant would hit first because it has a greater mass than the feather does

The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.

Electromagnetic radiation consists of waves of electromagnetic field, which propagates through space and carries momentum and electromagnetic radiant energy.

Minimum energy required to knock out an electron from the surface of the metal is called the work function.

As we know that, W= hc/λ

h -- Planck's constant ; c -- Speed of light

and λ is Longest wavelength

Given, work function of sodium metal is 2.28 eV

As 1 eV = 1.6021 * 10^-19 J

=2.28 * 1.6021 * 10^-19

= 3.65 *10^-19 J

W= hc/ λ

3.65 *10^-19 = 6.62 *10^-34 * 3 *10^8/ λ

λ = 5.44 * 10 ^-7m

λ =544 nm

The longest wavelength of electromagnetic radiation that will eject photo-electron from the sodium metal is 544 nm.

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Answer:

These measurement units are part of the metric system. Unlike the U.S. customary system of measurement, the metric system is based on 10s. For example, a liter is 10 times larger than a deciliter, and a centigram is 10 times larger than a milligram.

Answer: Unlike the U.S. customary system of measurement, the metric system is based on s. For example, a liter is times larger than a deciliter, and a centigram is times larger than a milligram

Answer:

Positions

Batting

Pitching

Explanation: