A physics student drops a vibrating 440-hz tuning fork down the elevator shaft of a tall building. when the student hears a frequency of 400 hz, how far has the tuning fork fallen?

Answer: thermal energy

Explanation: hope this helps

the distance between the two twin space probes is 4.04 × 1010 meters.

The distance between the two twin space probes can be calculated by using the formula of Gravitational Force.

The formula for Gravitational Force is:

F = G * (m1 * m2 / d^2)Where, F is the Gravitational Force, G is the Gravitational Constant (6.67408 × 10-11 N m2/kg2), m1 and m2 are the masses of the two objects and d is the distance between them.

In the given problem, the masses of the two twin space probes is given to be 722 kg each.

The gravitational force between the two space probes is 8.61 × 10–16 N. We can find the distance between them using the formula of Gravitational Force.

so, substituting the given values in the above formula we get:

F = G * (m1 * m2 / d^2)8.61 × 10–16 N = 6.67408 × 10-11 N m2/kg2 * (722 kg)2 / d^2

Solving this equation for d, we get:

d = √[(G * m1 * m2) / F]

= √[(6.67408 × 10-11 N m2/kg2 * 722 kg * 722 kg) / 8.61 × 10–16 N]

= 4.04 × 1010 meters

Therefore, the distance between the two twin space probes is 4.04 × 1010 meters.

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Answer:

the  kinetic energy the bat can give to a ball is 2,025 J.

Explanation:

Given;

mass of the bat, m = 2kg

velocity of the bat, v = 45 m/s

The kinetic energy the bat can give to a ball is calculated as;

\(K.E = \frac{1}{2} mv^2\\\\K.E = \frac{1}{2} \times \ 2 \ \times \ 45^2\\\\K.E = 2,025 \ J\)

Therefore, the  kinetic energy the bat can give to a ball is 2,025 J.

Answer: i guess d is the correct answer

Answer:

D

Explanation:

I used this and passed my test! good luck!

Answer:

(a) 217 Ra          (b)     29 P

      84                          16

Explanation

(a) 221 Rn ---------------> 4 He + 217 Ra

      86                           2             84

    the mass number is reduced by 4 while the atomic number is reduced               by 2 since an alpha particle is emitted

(b) 29 P ------------------> 0 e + 29 P

       15                          -1         16

     the mass number remains the same while the atomic number is reduced by -1 since a beta particle is emitted

Answer: The size of an object and the distance between the objects.

Explanation: Gravity is affected by the size of an object and the distance between the objects. When the mass of an object increases the force of gravity increases as well. If an object's weight is greater than the other object's weight, then the object with the greater weight will land first.

Answer:

The factors that affect gravitation are

Explanation:

Gravity is the force that gives weight to objects and causes them to fall to the ground when dropped. Two major factors, mass and distance, affect the strength of gravitational force on an object. You witness the first factor in everyday life - more massive objects are heavier. The second factor, distance, is less familiar, as it takes a distance of many thousands of kilometers to significantly weaken the pull of Earth's gravity. Newton's law of gravitation describes very accurately how mass and distance affect the force of gravity.

A certain lake, filled with fresh water, is 40 m deep and located at sea level. The absolute pressure (in kpa) at the bottom of the lake will be 492.1 kPa

P1 = rho * g * h

rho = density of water

g = acceleration due to gravity

h = depth

P1 = rho * g * h

   = 997 * 9.8 * 40 = 390824  N / \(m^{2}\) = 390.8 kPa

P(absolute pressure) =  Po + P1

  =   101.3 + 390.8  = 492.1 kPa

The absolute pressure (in kPa) at the bottom of the lake will be 492.1 kPa

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According to special relativity, one can travel at increased rates. However, this is only possible when moving at very high speeds approaching the speed of light. When an object moves at high speeds, the time slows down, and the length of the object appears to be shortened.

These observations are known as time dilation and length contraction. Time dilation refers to the difference in the elapsed time measured by two observers, where one is stationary, and the other is moving at a constant velocity relative to each other. The faster the moving observer, the slower time appears to be for them. Length contraction, on the other hand, refers to the phenomenon where an object appears to be shorter in length when it's moving at high

This effect is more noticeable as the speed of the object approaches the speed of light. As a result, traveling at very high speeds can allow one to cover great distances in less time, which can be used for space exploration and other scientific research. However, it's worth noting that the effects of relativity are only noticeable at very high speeds, which are currently impossible to achieve with our current technology.

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Answer:

Explanation:

Hope this helps :)  

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Answer:

25N

Explanation:

if you calculate it right the answer will be 25

Answer:

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Explanation:

Generally, a seismograph consists of a mass attached to a fixed base. During an earthquake, the base moves and the mass does not. The motion of the base with respect to the mass is commonly transformed into an electrical voltage. The electrical voltage is recorded on paper, magnetic tape, or another recording medium.

Answer:

1 / f = 1 / o + 1 / i

1 / image distance + 1 / object distance = 1  focal length

If the object distance is large the image will be at about the focal length

The value of 1 / f is fixed for any one particular lense

As the object distance decreases the image must increase

The above equation can also be written as

o i / (i + o) = f    or i / (i / o + 1)  = f

If for instance o was very large the image would be at the focal length

Answer:

2

cos

(

x

)

−

√

3

=

0

2

cos

(

x

)

-

3

=

0

5

3

y

+

5

2

=

5

5

3

y

+

5

2

=

5

x

−

4

≥

0

Explanation:hopefully this helps you

His final velocity at the end of the 2.6 seconds will be  25.48 m/s

given

time = 2.6 seconds

initial velocity = u = 0

acceleration = acceleration due to gravity = 9.8 \(m/s^{2}\)  (since , it is a free fall )

final velocity = ?

using kinematics equation

v = u + at

v = u - g*t

v = - 9.8 * 2.6 = - 25.48 m/s

His final velocity at the end of the 2.6 seconds will be  25.48 m/s in downward direction

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Answer:

The total distance between A and B is 30 km

Explanation:

The given information are;

The time duration of the acceleration of the train from station A = 3 minutes = 0.05 hours

The speed attained by the train after the acceleration = 144 km/h

The time duration the train maintains the speed = 10 minutes = 0.1\(\bar 6\) hours

The time duration in which the train decelerates to station B = 2 minutes = 0.0\(\bar 3\) hours

The equation of motion required are;

The initial acceleration, a = (144 - 0)/0.05 = 2,880 km/h²

The distance covered, s = u·t + 1/2·a·t²

Where;

u The initial velocity = 0

∴ s₁ = 0 × 0.05 + 1/2 × 2880 × 0.05² = 3.6 km

s₁ = 3.6 km

The distance, s₂ the train covers at the constant speed 144 km/h for 10 minutes (1/6 hours) is given as follows;

s₂ = Velocity Time = 144 × 1/6 = 24 km

s₂ = 24 km

The deceleration, a₂ that brings the train to a stop in 2 minutes (1/30 hours) is given as follows;

a₂ = (0 - 144)/(1/30) = -4320 km/h²

The distance covered, s₃ by the train as it decelerates to rest from the initial constant speed is given as follows;

s₃ = u·t + 1/2·a·t²

Where;

u = The initial velocity =144 km/h

We have;

s₃ = 144×1/30 - 1/2 × 4320 × (1/30)² = 2.4

s₃ = 2.4 km

The total distance between A and B, s = s₁ + s₂ + s₃ = 3.6 + 24 + 2.4 = 30 km

The total distance between A and B = 30 km.

The moon setting on your way to work about two hours after sunrise means it is in the gibbous phase.

This phase of the moon involves its side facing the Earth appearing more than half-lit by the Sun, but is less than fully lit.

This phase occurs few hours after sunrise usually in the early morning which is why it is the most appropriate choice.

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An electron and proton are separated by a distance, and the distance is: 1.517 × 10⁻¹⁴ m.

Positively charged particles include electrons. The magnitude of the negative charge is 1.602 x 10⁻¹⁹ C.

The electron, the lightest known stable subatomic particle, is regarded as the fundamental representation of electric charge.

Given that,

Charge of the electron is 1.602 x 10⁻¹⁹ C

electric force between them is 1.000 N

Electrostatic force between electron and proton:

F = [K × q(p) × q(e)] / r²

or, r² = [K × q(p) × q(e)] / F

or,  r² = (8.99 × 10⁹ N.m²/C²) × (1.602 × 10⁻¹⁹ C)²

or, r = 1.517 × 10⁻¹⁴ m

here. co-efficient = 1.517 and exponent = -14

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Explanation:

0.023, 1.0000004, 1.100

Answer:

Wind is caused by differences in the atmospheric pressure. When a difference in atmospheric pressure exists, air moves from the higher to the lower pressure area, resulting in winds of various speeds.

Our Earth is a rotating planet. Fast moving air is deflected by the Coriolis effect, except exactly on the equator. This defines the direction of cyclones, hurricanes, and typhoons rotation. The wind flow around a large cyclone is counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.

Wind forms when the sun heats one part of the atmosphere differently than another part. This causes expansion of warmer air, making less pressure where it is warm than where it is cooler. Air always moves from high pressure to lower pressure, and this movement of air is wind.

The high is west of you, and the low is east of you. (If you're in the northern Hemisphere.)

Length, time, mass, and temperature are four of the five values that need to be measured with consistent units the last one is eletric current.

Electric current is the orderly movement between electric charges present in a metallic conductor. This organization of movement happens when an electric field is created inside this conductor, causing its free electrons to develop an orderly movement.

Electric current is a scalar quantity. Its unit of measurement, according to the International System of Units, is the ampere (A). This unit measures the magnitude of the electric charge that crosses the cross section of a conductor every second.

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Answer:

Explanation:

The energy possessed by a moving object is called kinetic energy.M=1kgV=2m/sKe= 1/2MV^2Ke=1/2×1×(2)^2Ke =2 joules

Answer:

conduction i think

Explanation:

Answer:Conduction

Explanation:

Answer: B 3.0

Explanation:

Answer:

I think it might be A: Alec but tell me if I'm wrong

Explanation:

Answer:

a

Explanation:

i did it on e d g e n u i t y

Answer:

1.) 347,000,000

2.)7,940

3.)0.00196

4.)4,500,000,000

5.)0.00000961

6.)102,000

7.).000000000701

8.)44.4

Explanation:

when the power is positive, you just need to move decimal point to your right , for a number of times which is similar to the value of the power.

Eg. 3.47×10 raised to the power 8.

with this, move the decimal point to the right eight times which will be 347,000,000.

But when the power is negative, move the decimal point to the left for a number times which will be similar to the value of the power.

Eg. 1.96×10 raised to the power negative 3.

move the decimal point leftwards three times which will be 0.00196

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The magnitude of the magnetic field at the center of a coil depends on various factors such as the number of turns in the coil, the current flowing through it, and the geometry of the coil.

The magnitude of the magnetic field at the center of a coil can be approximated using the formula for the magnetic field at the center of a circular loop. For an idealized scenario with a circular coil carrying a current I, the magnitude of the magnetic field at the center can be given by:

B = (μ₀ * N * I) / (2 * R)

Where B is the magnetic field magnitude, μ₀ is the permeability of free space (a constant value), N is the number of turns in the coil, I is the current flowing through the coil, and R is the radius of the coil.

This formula demonstrates that the magnetic field at the center of a coil is directly proportional to the number of turns and the current flowing through the coil. It is inversely proportional to the radius of the coil. By adjusting these parameters, the magnitude of the magnetic field at the center of the coil can be controlled.

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Given:

The mass of the pendulum, m=1.29 kg

The length of the simple pendulum, L=0.830 m

The period of the pendulum, T=1.809 s

To find:

(b) The spring constant of the spring so that the period of the oscillation of the spring will be T.

Explanation:

The period of oscillation of a spring-mass system is given by the equation,

On rearranging the above equation,

On substituting the known values,

Final answer:

The spring constant of spring is 15.56 N/m