why is it easy to pull downwards​

We have the next equations

Sum the vertical forces

Sum of the horizontal forces

Sum of the moments about R

We isolate here the T

We substitute the value of T in the equation with R isolated

Ans we substitute the value of R and T in the sum of forces in y

We simplify the equation

Then for T

Then for R

The electric field between the two charged plates is 5.0 x 10^25 N/C.

The force on the electron is given by the equation:

F = q * E

where F is the force, q is the charge of the electron, and E is the electric field.

Rearranging this equation to solve for E, we get:

E = F / q

Plugging in the values given in the problem, we get:

E = (8.0 x 10^6 N) / (1.6 x 10^-19 C)

Simplifying this expression, we get:

E = 5.0 x 10^25 N/C

Therefore, the electric field between the two charged plates is 5.0 x 10^25 N/C.

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Answer:

220 bastanyan sagot ko yawa

Answer:

  2 m/s²

Explanation:

You want the acceleration produced by a force on 14 kg if that same force produces an acceleration of 7 m/s² when acting on a mass of 4 kg.

For the same force, the acceleration is inversely proportional to the mass. In this problem, the mass increases from 4 kg to 14 kg, a factor of 14/4 = 7/2.

The acceleration will change by a factor that is the inverse of this: 2/7.

  acceleration of 14 kg = (7 m/s²) × (2/7) = 2 m/s²

Answer:

1.60 x 10^-18 J

Explanation:

we know that, Work done = Voltage x Charge,

hence we get as,

Energy = V x Q

E = 2 x (8.0 * 10^-19)

==> E = 16 x 10^-19

=> E = 16/10 x 10^-18

==> E = 1.60 x 10^-18 J

Answer:

The change in momentum is the same with or without the kneepads.

Explanation:

Momentum is defined by the equation:

\(p=mv\)

with ΔM will be the same as there are equal initial and ending velocities.

When you fall, you have some momentum when you hit the ground. What stops your fall and how long it takes to stop your fall are irrelevant.

It must still find a way to absorb the same amount of momentum. You're still falling as long as your body has any remaining downward momentum.

The overall change in momentum may alternatively be thought of as a certain amount of "impulse," which is the result of force and the duration of the force.

As a result of the slower rate of momentum absorption compared to bare flooring, the force exerted on your knees by the knee pads is less than it would be without them.

Hence, The long period of time will cause the velocity to decline, which will also cause the impulse applied to your knee to decline.

The change in momentum of an object is the impulse it experiences.

It is defined by the equation:

\(J= \(\delta \)P{=m(v-u)\)

Where:

\(V=\frac{\text{distance}}{\text{time}}\)

When the time of fall increases threefold, the final velocity decreases threefold. Your knee will get less of an impulse since the velocity will be lowered.

Thanks,

Eddie

The magnitude of the masses in planes B and E is 40 kg, and their positions are 120° and 240°, respectively, from the reference point on the shaft to achieve complete rotating balance.

To achieve complete rotating balance, the sum of the moments of the masses in planes A, C, D, B, and E should be equal to zero. Let's determine the magnitude of the masses in planes B and E and their positions.

Consider the moments of the masses in planes A, C, and D. The moment of a mass is given by the product of its magnitude and the sine of the angle between the mass and a reference line. The moments of masses A, C, and D are:

Moment of A = 50 kg * sin(0°) = 0 kg·m,

Moment of C = 40 kg * sin(90°) = 40 kg·m,

Moment of D = 80 kg * sin(135°) = -80 kg·m.

Since the moments of A, C, and D are known, we can use the principle of complete rotating balance to determine the magnitude and position of the masses in planes B and E.

Let's assume the magnitude of the masses in planes B and E as M. The moments of masses B and E can be represented as:

Moment of B = M * sin(120°) = M * √(3)/2,

Moment of E = M * sin(240°) = -M * √(3)/2.

Using the principle of complete rotating balance, the sum of the moments should be zero. Thus, we have:

Moment of A + Moment of C + Moment of D + Moment of B + Moment of E = 0.

0 + 40 kg·m + (-80 kg·m) + M * √(3)/2 + (-M * √(3)/2) = 0.

Simplifying the equation:

40 kg·m - 80 kg·m + M * √(3)/2 - M * √(3)/2 = 0,

-40 kg·m = 0.

From the equation, we can deduce that M must be equal to 40 kg to satisfy the condition of complete rotating balance.

Finally, we determine the positions of masses B and E. Since planes A, C, D, B, and E are equidistant from one another, and the angle between A and C is 90°, we divide the circle into 360°/5 = 72° sections. Thus, the positions of masses B and E are:

Position of B = 0° + 2 * 72° = 144°,

Position of E = 0° + 4 * 72° = 288°.

Therefore, the magnitude of the masses in planes B and E is 40 kg, and their positions to put the shaft in complete rotating balance are 144° and 288°, respectively, from the reference point on the shaft.

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The pressure of the tank, when filled with water at a depth of 6 m, is approximately 580.124 atmospheres (atm). To calculate the pressure of the tank, one can use the equation: Pressure (P) = Density (ρ) × g × Depth (h)

Pressure (P) = Density (ρ) × g × Depth (h)

Given: Density of water (ρ) = 1000 kg/m³

Acceleration due to gravity (g) = 9.8 m/s²

Depth (h) = 6 m

Using the given values, one can calculate the pressure:

Pressure = 1000 kg/m³ × 9.8 m/s² × 6 m Pressure

= 58800 kg·m⁻¹·s⁻²

Now, let's convert the units to pascals (Pa) using the conversion 1 atm = 1.013 x \(10^5\) Pa:

Pressure = 58800 kg·m⁻¹·s⁻² × (1 atm / 1.013 x\(10^5\) Pa)

Pressure = 580.124 atm

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i) The initial deceleration of the car is -1.6 m/s² and  the time taken is 5 seconds

ii) The final deceleration is -1 m/s²

iii) The total dispalcement = 1016 m

The initial deceleration of the car is given by the formula below:

v² = u² + 2as

where;

Solving for a;

12² = 20² + 2 * a * 80

a = -1.6 m/s²

Time taken, t = v - u / a

t = 12 - 20 / (-1.6)

t = 5 seconds

Final deceleration:

a = v - u / t

a = 0 - 12 / 12

a = -1 m/s²

iii) Displacement at constant velocity = 12 * 1 * 60

Displacement at constant velocity = 720 m

Final displacement, s = ut + 0.5at²

s = 12 * 12 + 0.5 * 1 * 12²

s = 216 m

Total dispalcement = 80 + 720 + 216

Total dispalcement = 1016 m

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To determine which bucket contains more water, I would pour the water from one bucket into the other until they are both at the same level. Then, I would compare the amount of water left in each bucket. The bucket with more water remaining is the one that originally had more water.

The amount of energy of a single photon of light is determined by its frequency.

The Planck-Einstein relation is a fundamental equation that describes the relationship between the energy (E) of a single photon of light and its frequency (f). The relation is given by the formula:

\(E = hf\)

where h is Planck's constant, a physical constant with a value of approximately \(6.626 x 10^-34 joule seconds (Js)\). This equation suggests that the energy of a photon is directly proportional to its frequency. In other words, photons with higher frequencies (such as those in the ultraviolet or x-ray parts of the electromagnetic spectrum) have more energy than those with lower frequencies \(6.626 x 10^-34 joule seconds (Js)\) (such as those in the infrared or radio parts of the spectrum).

The speed of the photon and the material it moves through can affect its wavelength and therefore its frequency, but they do not directly determine its energy. The time it takes the photon to reach a destination is not directly related to its energy either.

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The length of the pendulum is measured from the lower part of the wooden clamp, because the center of gravity is at the center of the bob.

The simple pendulum's length, l is determined by measuring it from the point of suspension to the center of gravity (center of the bob), which is the place where all of this sphere's mass is concentrated.

The center of the mass will exactly reside in the center of the bob when we take the bob's dimensions into account.

As a result, the total length is now equal to the length of the string plus the bob's radius. The length is thus measured from the lower part of the wooden clamp.

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Answer:

its temperature stays constant

Explanation:

Answer:

D

Explanation:

If the water represents the oceans water then you'd would need to calculate how much of earth is water (96.5)

The way that the clock at the rim of the space station compare with one residing at the hub is that Rim clock will always runs slower.

The behavior of a clock sitting on the surface of a planet with a surface gravity of one g is the same.

For instance, timekeeping on the International Space Station (ISS) is slightly slower than that of reference clocks on Earth. This explains why astronauts on the International Space Station (ISS) mature more slowly, lagging by 0.007 seconds every six months.

Ground-based atomic clocks have served as the industry standard for timekeeping since the 1950s. These clocks use the extremely steady and accurate frequencies of light emitted by particular atoms to keep time.

Therefore, Satellite clocks run slower due to more velocity but faster due to reduced gravity. Clocks move more slowly at the ISS orbital height because velocity dominates. At GPS altitude, clocks move more quickly due to the influence of gravity.

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The types of chemical reactions are as follows:

Chemical reactions are changes in which new substances are formed.

The types of chemical reactions are as follows:

In conclusion, chemical reactions produce new substances.

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Answer:

\(X=8.44m\)

Explanation:

From the question we are told that

Distance b/w A&B \(x=4.80m\)

Frequency \(f=134Hz\)

Sound speed \(v=343m/s\)

Generally the equation for wavelength is mathematically given as

\(\lambda=v/f\)

\(\lambda/2=1/2*v/f\)

\(\lambda/2=1/2*\frac{343}{135}\)

\(\lambda/2=1.27037037\)

Generally the destructive interference X is mathematically given by

\(\sqrt{4.8^2 +X^2} -X=1.27037037\\\)

\(23.04+BC^2=X^2+1.613+2.54*X\)

Therefore the destructive interference is

\(X=8.44m\)

Answer:

i think the correct answer is B. cancel out

Answer:

You would weigh very slightly more at sea level than at the top of a mountain, not enough for you to notice, but a measurable amount. Weight, which really means gravitational force, is proportional to the product of the masses of two objects acting on each other, in this case the giant earth and the minuscule you.

Explanation:

Answer:  see attachment

Explanation:

After considering the given data we conclude that the charge on each sphere is 2.5 × 10³ C, under the condition that  Coulomb's law  was used.

Coulomb's law states
F = (k ×q₁× q₂ )/r²,
Here
F = electrostatic force between two point charges,
k = coulomb constant,
q₁ and q₂ = charges on the spheres and r is the distance between them
We are given that both spheres have equal charges and force between them is 1.0 N and they are 2.0 m apart
q= √(1.0 N × 4.0m²)/k
q = 2.0 × 10⁻⁴ C
Since charge on each sphere is same, so the charge on each sphere will be
q₁ = q₂  = 2.5 × 10³ C
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Answer:

A solar powered spacecraft could not operate in the umbral shadow but could operate in penumbral shadow.

Answer:

Since the object is floating, the buoyant force equals the weight of the water displaced:

W = d g v  where d is the density of water and v = V/2 where v is the volume of the water displaced   and v = V/2 where V is the volume of the object.

W = 1000 kg/m^3 * 9.8 m/s^2 * (3.5 /2 m^3)

W = 17150 kg m / s^2 = 17150 N

When an object floats with half its volume beneath the surface of the water. If the volume of the object is 3.5 m,then the weight of the object would be 17167.5 N if the density of water is 1000 kg/m3

It can be defined as the mass of any object or body per unit volume of the particular object or body. Generally, it is expressed as in gram per cm³ or kilogram per meter³.

The density is the reciprocal of the specific volume of any substance.

The mathematical formula for density is given below

ρ =m /V

where ρ is the density of the substance

m is the mass of the substance

V is the volume of the substance

As given in the problem an object floats with half its volume beneath the surface of the water. The volume of the object is 3.5 m

The density of water is 1000 kg/m3​

According to the Archimedes principle, the buoyancy force acting on  the floating object is equal to the weight of the fluid displaced by it

W =  ρ g V

Given the object floats with half its volume beneath the surface of the water means the volume of the water displaced is half of the volume of the object

V=3.5/2 m³

W = 1000×9.81×3.5/2

   = 17167.5 N

Thus, the weight of the object is 17167.5 N

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On Mars, with an acceleration due to gravity of 3.71 m/s^2, the same falling mass of 15.0 kg would impart 55.6 J of kinetic energy to the rotating drum if it falls through the same height of 3.00 m, assuming all other factors remain the same.

The kinetic energy (K) imparted to the drum by the falling mass can be calculated using the formula:

where m is the mass of the falling object, and v is its velocity.

Since the object starts from rest, its initial velocity is zero, and we can simplify the formula to:

where u is the initial velocity of the falling object.

The potential energy (U) of the falling object is given by:

where g is the acceleration due to gravity and h is the height through which the object falls.

Since the potential energy is converted to kinetic energy, we can set U equal to K:

Simplifying the formula, we get:

Substituting the values given in the problem, we get:

Taking the square root of both sides, we get:

Using this velocity, we can calculate the kinetic energy imparted to the drum on earth:

To calculate the kinetic energy imparted to the drum on Mars, we can use the same formula, but with the acceleration due to gravity on Mars (3.71 m/s²):

Taking the square root of both sides, we get:

Using this velocity, we can calculate the kinetic energy imparted to the drum on Mars:

Therefore, the same falling mass of 15.0 kg would impart 55.6 J of kinetic energy to the rotating drum on Mars, which is less than the 350.0 J on earth due to the lower acceleration due to gravity.

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The density of an eraser with a mass of 6 g and a volume of 2 cm3 is found to be 3 g/\(cm^3\).

Density may be characterized as a type of physical quantity that eventually describes the mass of objects with respect to their volume. The most frequent symbol used for density is ρ (row). It is defined as mass divided by volume.

The density of an object is calculated with the following formula:

According to the question,

The mass of an eraser = 6 g.

The volume of an eraser = 2 \(cm^3\).

The density = 6/2 = 3 g/\(cm^3\).

Therefore, the density of an eraser with a mass of 6 g and a volume of 2 cm3 is found to be 3 g/\(cm^3\).

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Answer:

Experiments are often performed in labs due to safety issues and certain equipement that cannot e taken outside.

Explanation:

Answer

Answer: This is because all of your equipment is readily available, not only that, it’s always better to be in a rather controlled environment!

Explanation: Hope the answer helps!, next time be a little more specific.

The series circuit has components connected in a sequence, while the parallel circuit has components connected in different branches. If bulb B2 is replaced with a wire in the series circuit, bulb B1 will not light up, while in a parallel circuit, it will still light up.

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Answer:

It is not possible for the magnitude of displacement of an object to be greater than the distance that this object travelled.

Explanation:

The displacement of an object is difference between its final and initial position. On the other hand, the distance that an object travelled would be equal to the length of the path that this object takes when it moved from its initial position to the final position.

The distance an object travelled and the magnitude (length) of its displacement each represent the length of a path between the initial and final position:

On a flat surface, the shortest path between two points is always going to be a straight line segment connecting the two points. If these two points are the initial and final position of the object, the magnitude of displacement would simply represent the length of that straight line segment. It is not possible for the distance travelled to be any shorter than the shortest path between the two points. Therefore, the displacement of an object would always be less than or equal to the distance it travelled.

Answer:

0.159

Explanation:

the formula to find its is 1÷2*gt^2

Answer:

D

Explanation:

v= a t

 = 5.1 * .25 = 1.275 m/s