4. Three masses are connected by a light string that passes over a
frictionless pulley as shown. (a) What is the acceleration of the .
system? (b) What are the tensions in the strings?
m.

Answer:

The precision corresponds to the least count of the measurements, which is 0.1 cm 0.1 c m for the length of the box. In a similar manner, the precision of the volume is 0.01×103 cm3=10 cm3 0.01 × 10 3 c m 3 = 10 c m 3 .

1. The final velocity (Vf) is 25.088 m/s

2. The initiial velocity (Vo) is 0 m/s

3. The time is 2.56 s

4. The acceleration is positive

The following data were obtained from the question:

We'll begin by obtaining the time take to reach the ground. this is illustrated below:

h = ½gt²

32 = ½ × 9.8 × t²

32 = 4.9 × t²

Divide both side by 4.9

t² = 32 / 4.9

Take the square root of both side

t = √(32 / 4.9)

t = 2.56 s

Finally, we can obtain the final velocity as follow:

vf = vo + gt

vf = 0 + (9.8 × 2.56)

vf = 0 + 25.088

vf = 25.088 m/s

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The delegates represented upper-class White men with political power.

Philadelphia, Pennsylvania offered to host the Constitutional Convention from May 14 to September 17, 1787. Choosing America's future government was the main goal of the event. Many of the delegates had much more ambitious plans than the official purpose of the Convention, which was to amend the current Articles of Confederation. It is with the purpose to create concepts for a new government and to revise the Articles of Confederation.

The federal government created by the United States Constitution, which resulted from the convention, was given more precise powers, including those pertaining to managing relations with other governments.

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Answer:

The delegates represented upper-class White men with political power.

What constituted the Constitutional Convention?

Philadelphia, Pennsylvania offered to host the Constitutional Convention from May 14 to September 17, 1787. Choosing America's future government was the main goal of the event. Many of the delegates had much more ambitious plans than the official purpose of the Convention, which was to amend the current Articles of Confederation. It is with the purpose to create concepts for a new government and to revise the Articles of Confederation.

How did the Constitutional Convention affect society?

The federal government created by the United States Constitution, which resulted from the convention, was given more precise powers, including those pertaining to managing relations with other governments.

Explanation:

The ratio of the cubes of any two planets' average distances from the sun (r) to their squares representing their periods (T) is equal to one.

First Law: The sun is at the center of elliptical planetary orbits.

Second Law: Equal areas are covered in equal amounts of time by the radius vector from the sun to a planet.

Third Law: For every planet, the ratio of the cube of the ellipse semimajor axis to the square of the period of revolution is the same.

The third law of Kepler, also referred to as the Law of Harmonies, states that the ratio of any two planets' squared periods to their squared average distances from the sun is equal to one. The third law compares a planet's orbital radius and period to those of other planets.

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C.  The following scenarios that shows an object with a negative velocity and a negative acceleration is "a pig moves toward the reference point slowing down."

A negative velocity occurs when an object moves in the negative direction.

Example of negative velocity;

If the object is slowing down then its acceleration vector is directed in the opposite direction as its motion. Thus, the acceleration of the object will be negative.

Thus, the following scenarios that shows an object with a negative velocity and a negative acceleration is "a pig moves toward the reference point slowing down."

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The  kinematic equation which could be used to find v₀ is Δx= (v + v₀/ 2) Δt; option B.

Kinematic equations are equations which relates the motion of a body.

Kinematic equations shows the relationship between the various parameters of motion of a body:

The kinematic equations are given below:

Given the values for Δx, v, and Δt, the kinematic equation which could be used to find v₀ is Δx= (v + v₀/ 2) Δt

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Answer:

6.0 m/s^2           There are 2 places of accuracy. (5.0 has only two places)

Explanation:

Formula

This uses the formula

a = (vf - vi)/t where

Solution

Substitute the givens into the formula

a = (50m/s - 20 m/s)/5

a = 30/5

a = 6 m/s^2

The ball's velocity is 9.9 m/s fast when it hits the sidewalk.

Velocity is the rate of change of displacement.

To calculate how fast the ball was moving when it hits the sidewalk, we use the formula below.

Fromula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the ball's velocity is 9.9 m/s fast when it hits the sidewalk.

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Answer:

v = 10t

Explanation:

The velocity of an object after time t is given by the equation
v(t) = u + at

Here u, the initial velocity is 0

a = acceleration = g = 10 m/s²

Therefore at any time,
v(t) =  0 + 10t

v = 10t

After 5 seconds, v = 10 m/s² x 5s  = 50 m/s

The graph of this equation is given

The SI units of-

Temperature--- kelvins

Mass--- kilogram

Length--- meter

Volume--- litre

CGS units  The centimeter-gram-second system of units is how this is expressed.

FPS units  The foot-pound-second system of units is what this is in its entire form.

MKS unit  This system's full name is meter, kilogram, and second.

SI unit. International System of Units is the longer abbreviation for the units.

The SI includes units for all common measurement types, but its core consists of seven units known as the "basic units." To maintain comparability and consistency across the globe in our everyday measurements, we need the International System of Units.

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Answer:

Length = meter

mass = kilogram

volume = cubic meter

temperature = kelvin

Explanation:

apexs

The tractor is in linear motion but the wheels of the tractor are in rolling motion.

When the sudden turn comes then it wants to continue in rolling motion due to conservation of angular momentum.

But the angular momentum is applied and due to inertia, the weight and friction shifts on the bigger wheels causing difference in the angular speed.

Thus, the bigger rear wheels of the tractor rotate more slowly as compared to front small wheels because the bigger wheels have greater moment of inertia due to their mass as compared to front small wheels. That’s why the rear wheels are bigger than the front wheels.

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The law of conservation of mass states that matter cannot be created or destroyed.

The law of conservation of mass states that the mass of the reactant must be equal to the mass of the product.

In 18th century law of conservation of mass was given by Levoisier.

It states that mass is neither created nor destroyed.

Example -

The law of conservation of mass states that matter cannot be created or destroyed.

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Answer:

OB. It is the change in pattern of human interactions and social structure.

this could be the best from my opinion

The speed that must be attained by the object when its projected upward vertically is 15.34 m/s.

Speed is the ratio of the distance covered by a body to the total time.

To calculate the speed the object must attain, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the speed that must be attained by the object when its projected upward vertically is 15.34 m/s.

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Answer:

dr

Explanation:

Jamil cycles to the shop and back home in 360 seconds. Jamil takes 150 seconds to reach the shop and stays there for 90 seconds and come back to home.

Speed is the rate at which an object or a body moves.

Formula of Speed:

Speed = Distance/Time

In the given graph, Jamil cycles to the shop, time taken by Jamil to reach the shop can be calculated by the first part of the graph.

Time taken = (150-0)sec

Time = 150 sec

The distance travelled by Jamil is denoted on the Y-axis:

Distance travelled to get to the shop = 450m

Speed at which Jamil cycles to the shop can be calculated by:

Speed = Distance/Time

Speed = 450m/150sec

Speed = 3m/sec

The time period for which Jamil stays at the shop can be inferred from the graph as the distance travelled will be zero at that time.

Time for which distance is constant = Horizontal part of the graph

Time = 240sec-150sec

Time = 90sec

The speed at which Jamil cycles back to his home can be calculated by the last part of the graph when he goes back to his home from shop.

Time taken = (360-240)sec

Time taken = 120 sec

Distance Travelled = 450m

Speed = Distance travelled/ Time taken

Speed = 450m/120sec

Speed = 3.75m/sec

Therefore, the speed of Jamil while going to the shop is 3m/sec while the speed of Jamil returning back to home is 3.75m/sec.

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Answer:

Explanation:

Data:

m = 3 kg

h = 250 m

g = 1,6 H/kg

Find:

E - ?

-----------------------------------

Solution:

E = mgh

Calculations:

E = 3 kg · 250 m · 1,6 H/kg = 1200 J

Answer: E = 1200 J.

The value 35.6 have on the measures of central tendency for the data in the left column, as mean will be higher than the median and mode. The correct option is C.

The mean is the average of a set of values in mathematics and statistics. There are several ways to compute the mean, including the simple arithmetic mean, the geometric mean, and the harmonic mean.

To find the mean, add all of the numbers together. The total sum is then divided by the number of scores used. The mean or average of the number set in this example is 6.7.

The value 35.6 has a positive effect on the measures of central tendency for the data in the left column, as the mean is greater than the median and mode.

Thus, the correct option is C.

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Answer:

Approximately [tex]2.2\; {\rm m\cdot s^{-2}}[/tex].

Explanation:

Acceleration is the rate at which velocity changes.

In this example, velocity has changed from [tex]v_{0} = 0\; {\rm m\cdot s^{-1}}[/tex] to [tex]v_{1} = 27\; {\rm m\cdot s^{-1}}[/tex]. The total change in velocity is:

[tex]\begin{aligned}\Delta v &= v_{1} - v_{0} \\ &= 27\; {\rm m\cdot s^{-1}} - 0\; {\rm m\cdot s^{-1}} \\ &= 27\; {\rm m\cdot s^{-1}} \end{aligned}[/tex].

This change happened over a period of [tex]\Delta t = 6.00\; {\rm s}[/tex]. Therefore:

[tex]\begin{aligned} & (\text{avg. acceleration}) \\ =\; & (\text{avg. rate of change in velocity}) \\ =\; & \frac{(\text{change in velocity})}{(\text{time required})}\\ =\; & \frac{\Delta v}{\Delta t} \\ \approx\; & \frac{27\; {\rm m\cdot s^{-1}}}{6.00\; {\rm s}} \\ \approx \; & 2.2\; {\rm m\cdot s^{-2}} \end{aligned}[/tex].

The potential energy gained is 4550 J.

The potential energy that a huge item has in relation to another massive object due to gravity is known as gravitational energy or gravitational potential energy. When two objects descend toward one another, potential energy associated with the gravitational field is released.

The potential difference is given as:

U = mgh

Where U is the gravitational energy, m is the mass, g is the acceleration due to gravity, and h is the height.

Now, we have

Leopard's mass, m = 65kg

The height of the tree, h = 7 m

Acceleration due to gravity, g = 10N/kg

Therefore,

U = mgh

U = 65 × 7 × 10

U = 65 × 70

U = 4550 J

Thus, the leopard will need 4550 J of gravitational potential energy to climb 7 meters.

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The valve will stop when the wheel stops.

How can the wheel stops?

The other way by which it stop is :

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Answer: fluorine, chlorine and bromine

Explanation: They all have the same valence electrons. Valence electrons are the electrons on the outer circular. Hope this helped!

Answer:

speed

Explanation:

meters per second

No, it is fair to say that the car was moving at the calculated “average speed” at all points along the track and the floor

Average velocity is the average value of velocity of an object during its whole period of movement. Instantaneous velocity is the velocity of an object at any given instant in its movement.

Average velocity can be equal to the instantaneous velocity if the velocity is constant. The velocity of an object can be constant if there are no external forces acting on the object. But here in the given condition, the car moves on a track where there will be frictional force and air resistance.

Therefore, it is not fair to say that the car was moving at the calculated “average speed” at all points along the track and the floor.

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The magnitude and direction of the electric field is 1.05×10^5N/C

The Electric Field is described  as the electric force per unit charge.

E=[tex]\frac{F}{q}[/tex]

Here, F is an electric force,E is the Electric Field and q is a charge. charge is measured in coloumb.

For finding the magnitude, the expression can be use as follows,

E=[tex]\frac{F}{q}[/tex]

now put all the values given

F= 1.86x10^-14 N

q=1.6×10^-19C

E= 1.86x10^-14 N÷1.6×10^-19C

E=1.05×10^5N/C

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277.01 picometers is equivalent to 2.7701 × 10-⁸ centimetres in scientific notation. Details about how to convert picometers to centimetres can be found below.

Picometers is the SI unit of length that is equal to 10−¹² meters.

On the other hand, centimetres is another S.I unit of length that is equal to 10-² metres.

The conversion factor of picometers to centimetres is as follows:

1 picometre = 1 × 10-¹⁰ centimetres

277.01 picometers is equivalent to 2.7701 × 10-⁸ centimetres

Therefore, 277.01 picometers is equivalent to 2.7701 × 10-⁸ centimetres in scientific notation.

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The electric field vector of the electromagnetic waves always travel from side to side.

Energy, which is a measure of one's ability to accomplish work, comes in various forms and can change from one to another. Cells and waters behind a dam are instances of retained or potential energy. Kinetic energy is represented by moving objects. When charged particles, such as protons and electrons travel, they generate electromagnetic fields, which convey the sort of energy known as electromagnetic waves, or light. Electromagnetic waves move energy and motion over space by altering electric and magnetic fields. Maxwell's formulas, which constitute the basic equations of electrodynamics, are solved by EM waves. EM waves do not require a medium to move; they can pass across empty space. One form of electromagnetic wave is sinusoidal plane waves. Although not all electromagnetic radiation are sine plane waves, all electromagnetic waves may be thought of as linear superpositions of sine plane waves flowing in any direction.

The part of the electromagnetic wave which travels side to side is electrical.

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Answer: magnetic

Explanation: i got it right.

7.32652978 × 10∧12 centimetre per (day squared) is the answer by converting  32.2 ft/s^2 to centimeter per day squared

Humans constantly encounter many factors. One g is the usual gravitational acceleration. You must, however, accelerate 9.8 m/s2 upward in order to reach 2g. You will accelerate by 2g as a result of this. While on Earth, we frequently experience more than 1g.

This enables you to calculate the change in velocity in metres per second squared (m/s2).

An informal measurement of force using units of acceleration equal to one g that applies to a body due to acceleration or gravity. A 12 pound item moving at 2 g receives 24 pound of force, for instance.

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Answer:

157.9m

Explanation:

Vi = 20

t = 6

x = 28cos(20)

Find the distance by multiplying the horizontal velocity x time.

(28cos(20))(6)

= 157.9 m