What is the cos of 22

Answer:

Average speed = 2.5 mph

Distance = 22.352 meters

Explanation:

Calculate speed, distance or time using the formula d = st, distance equals speed times time.

Calculate speed, distance or time using the formula d = st, distance equals speed times time.

You can use this formula for any question like this

The integral of 1/(1 + x²) is (1/2)ln|1 + x²| + C where C is the constant of integration.

Integration is a mathematical process of finding the antiderivative of a function. To integrate the given expression 1/(1 + x²), we will use the substitution method.

Let u = 1 + x², du/dx = 2x dx, then dx = du/2x and the integral becomes:

∫1/(1 + x²) dx = ∫1/u * (1/2x) du= (1/2)∫1/u du

The antiderivative of 1/u is ln|u| + C, where C is the constant of integration.

Therefore, the final solution of the integral is (1/2)ln|1 + x²| + C.

Let us work through the steps:

Step 1:Let u = 1 + x² and then differentiate both sides with respect to x to obtain du/dx. du/dx = 2x

Substitute 2x dx = du into the integral ∫1/(1 + x²) dx to get the integral in terms of u:∫1/u * (1/2x) du = (1/2) ∫1/u du

Step 2:Calculate the antiderivative of 1/u, which is ln|u|. Thus, the final solution is (1/2)ln|1 + x²| + C, where C is the constant of integration. The constant C will vary depending on the initial conditions of the problem.

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Answer:

Gamma rays are mostly used in the radiotherapy/ radiooncology to treat cancer. They can also be used to spot tumours. Gamma rays can kill living cells and damage malignant tumor

Answer:

97.1037936

Explanation:

?

Answer:

60.3375 m/ per sec

Explanation:

first multiply 1609 (the amount of meters in a mile) by 135( the total number of miles). this brings you to conclude there are a total of 217,215 meters in 135 miles.

So 135 mph = 217,215 meters per hour.

From here I took a simple route so as to not need a calculator.

217,215 meters = 60mins. (divide both sides by 2)

108,607.5 = 30mins. (divide both sides by 2)

54,303.75 = 15mins. (divide both sides by 15)

3620.25 = 1min

3620.25 = 60secs. (divide both sides by 60)

60.3375 = 1sec

60.3375 meters per second = 135miles per hr.

First, calculate the partial pressure of H2 by considering the total pressure:

where,

Ptot = 1.1bar

PH20 = 150Torr

Convert the previous values to atm:

Ptot = 1.1 bar = 1.085 atm

PH20 = 150 Torr = 0.197 atm

Then, for PH2 you obtain:

Next, use the following equation for ideal gases:

where,

V: volume = 55.65mL = 0.05565 L

R: gas constant = 0.082 atm*L/mol*K

T: temperature = 60 + 273 = 333K

P: partial pressure of H2 = 0.888atm

Solve the equation for n and replace the values of the other parameters:

Next, use the atomic weight to determine the mass of H2:

Hence, there are 0.0036 g of H2 collected above the water

The hollow spherical shell has a mass of 7.90 kg and a radius of 0.230 m. It initially rests and then rotates with a constant acceleration of 0.895 rad/s2 around a stationary axis that lies along a diameter. The kinetic energy of the hollow spherical shell is 2.12 J.

The first step is to calculate the angular displacement using the formulaθ = n × 2π = 5.00 rev × 2π/rev = 31.4 rad[The angular displacement here is a positive value, as the spherical shell is rotating in a counterclockwise direction]. The next step is to calculate the angular velocity after 5.00 rev, using the formula

ωf = ωi + αt, where ωi = 0 [initial angular velocity]α = 0.895 rad/s2 [angular acceleration n]t = 2.22 s [time taken to complete 5.00 revolutions]Therefore,ωf = 0 + 0.895 × 2.22 = 1.987 rad/s Kinetic energy of the shell, K = 1/2 I ω²where I is the moment of inertia of the shell.

The moment of inertia of a hollow spherical shell is given by

I = 2/3 M R² where M is the mass of the shell and R is the radius of the shellSubstituting values, K = 1/2 × 2/3 × 7.90 × (0.230)² × (1.987)²= 2.12 J [to 2 significant figures]

Therefore, the kinetic energy of the hollow spherical shell is 2.12 J after it has turned through 5.00 revolutions.

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Answer:

Explanation:

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Answer:

–625 J

Explanation:

So, we got this formula for the work

W=mgd(Cosθ)

but remember when it's liftin somethin, its work gon be against the work of gravity, so

Cos180°= –1

W=500×1.25×(–1)

W= –625 J

The gravitational pull of the second moon would be stronger than that of our moon, but it wouldn't be three times stronger because the gravitational pull is also influenced by the separation between the two bodies.

It would pull in more gravitationally than our moon if Earth had a second moon that was three times as large as our own and positioned similarly to the earth. An object's mass and distance from another object both affect gravity.

The gravitational attraction of the second moon would be stronger since it would be heavier than the first. The second moon would have a larger gravitational pull since it would be heavier than the first. The strength of the gravitational force is also affected by distance.

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The object is known as buleshift.

Object is a type of thing that can be seen or touch but it's is never alive .

When an object is moving to the  away from us, the light from the object is known as if the  redshift, and when an the  object is moving to the  towards us, the light from to  the object is known as of the  blueshift. Astronomers use by the  redshift and blueshift to deduce how far an object is away from Earth, in the  concept of key to charting by its  the universe's expansion.

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The description you provided suggests that turning the sander towards the left was not the answer. So, the correct answer to the question is ""pull away from you"".

Based on the description you provided, as you turn the finishing sander towards the right, the tendency of the sander would be to pull away from you. This is because the rotation of the flywheel is counterclockwise as seen from behind the handle, and turning the sander towards the right would cause the edge of the sander to dig into the wall, resulting in the sander wanting to move away from you.

Turning the sander towards the left would cause it to turn upward, and turning it downward would cause it to push toward you.

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Answer: The answer is D

Explanation:

Given the time and distance covered, the rockets travels with a speed of 616.67m/s.

Given the data in the question:

Speed of the rocket; \(v = \ ?\)

Speed is simply the time rate at which a particle or object is moves along a path. It is expressed as:

Speed = Distance ÷ Times

\(v = \frac{s}{t}\)

We substitute our given values into the equation

\(v = \frac{185000m}{300s}\\\\v = 616.67m/s\)

Therefore, given the time and distance covered, the rockets travels with a speed of 616.67m/s.

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Answer:

coins made with the combination of copper zinc and Nickel

A cloth is made of fabrics

A towel is made from cotton

an umbrella is made up of fiberglass

a sweater is made up of wool

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Answer: . You may have heard that muscle weighs more than fat. However, according to science, a pound of muscle and a pound of fat weigh the same. The difference between the two is density.

Explanation:

Answer: (C) Slide against each other

Explanation:

Think about rubbing our palms together, and they get warm that right there is friction.

Answer:

slide against each other

Explanation:

Answer:

The equivalent or total resistance of the circuit is 6

Explanation:

6 &6 are in series

6+6=r

r= 12

1/Rtotal= 1/12+1/2

1/Rt=2/12=1/6

Rt=6

Thirty-five coulombs of charge flow through a wire in 2 minutes accounts for around 0.29167 amperes in the current wire.

Given:

Electric charge= 30 coulomb

Time for which charge flows through a wire = 2 minutes = 120 seconds

To find:

Electric current flowing in a wire=?

To calculate electric current understand the concept:

An electric current is the flow of charged particles through the conducting material.

The Standard International unit of electric current is Ampere or amp or A.

One ampere is defined as the flow of one-coulomb electric charge in one second.

It can be calculated as follows:

Electric current (Ampere) = Electric charge(Coulomb) ÷ time(seconds)

Electric current (A) = 35 C ÷ 120 s

Electric current = 0.29167 amperes

Hence, the electric current is flowing at the rate of 0.29167C/s or 0.29167 Ampere through a wire.

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Answer:

Time = 11.60 seconds.

Explanation:

Speed can be defined as distance covered per unit time. Speed is a scalar quantity and as such it has magnitude but no direction.

Mathematically, speed is given by the equation;

\(Speed = \frac{distance}{time}\)

Given the following data;

Speed = 0.711m/s

Distance = 8.25m

To find the time;

Making time the subject of formula, we have;

\(Time = \frac{distance}{speed}\)

Substituting into the equation, we have;

\(Time = \frac{8.25}{0.711}\)

Time = 11.60 secs.

Answer:

b

Explanation:

because the same current flows through the lamps and the total voltage across all the lamps is the sum of all the separate voltages across them.

Answer:

The answer to this question can be defined as follows:

Explanation:

Advantage:

Answer:

An excess of positive (or negative) charge causes the leaves to diverge

Bringing a neutral rod in the vicinity of the electroscope will cause some of the positive charge to leave the leaves (making the electrically neutral rod negative at the tip) causing the leaves to converge.

The force is  1.1 * 10^-32 N

Coulomb's law is a fundamental law in physics that describes the electrostatic interaction between charged particles. It states that the force between two point charges is proportional to the product of their charges and inversely proportional to the square of the distance between them. Mathematically, Coulomb's law can be written as:

F = k * q1 * q2 / r^2

where F is the electrostatic force between the charges q1 and q2, r is the distance between the charges, and k is the Coulomb constant, which is approximately equal to 9 x 10^9 N * m^2 / C^2. The force F is a vector quantity, meaning that it has both magnitude and direction, and is directed along the line joining the two charges.

We have that;

F = Kq1q2/r^2

F = 9 * 10^9 * 1.6*10^ -19 * 3.2*10^ -19/(0.02)^2

F = 1.1 * 10^-32 N

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Answer:

The index of refraction

The index of refraction tells us how much slower or faster light travels from one medium to another.

The formula to find the refractive index of a substance is the following:

\(n=\dfrac{c}{v}\)

This makes the index of refraction defined as the ratio of:

Answer:

index of refraction

Explanation:

A) The work done by the electric force on an electron is equal to the change in its electrical potential energy, which is equal to the potential difference between the cathode and the anode multiplied by the charge of the electron.

W = qV = (1.6 x 10^-19 C)(125 000 V) = 2 x 10^-14 J

B) The kinetic energy of an object is given by the equation KE = 1/2 mv^2. If the electron is initially at rest, its final kinetic energy is equal to the work done on it by the electric force, since all the energy used to accelerate it is converted to kinetic energy.

KE = W = 2 x 10^-14 J

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Answer:

.516

Explanation:

I typed this into Acellus and it was correct.

Since Hooke's law implies linear, i anticipate that the length of a spring will double if the weight hanging on this is doubled. The graph below depicts a spring's ideal Hooke's law graph.

At the range of the material's elastic limit, according to Hooke's law, the strain is inversely related to the applied stress. The molecules and atoms in elastic materials stretch when they are stretched, distort when under stress, and then return to their original shape once the tension is released.

In the year 1660, an English british scientist Robert Hooke discovered Hooke's law, commonly known as that of the law of elasticity. According to Hooke's law,  the magnitude of the deformation is precisely proportional to a deforming load or force.

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