When a pendulum is swinging circle on a string, its own weight w and the string tension force T act on it. Which of the following is the correct description of the centripetal force on the pendulum? - The weight force w is the centripetal force. - The tension force is the centripetal force. - The tension force T is the centripetal force. - The weight force w and the tension force т together form the centripetal force. -The centripetal force is a 3rd force on the object other than the weight W and the tension force T

Answer:

I think it's A

Explanation:

he shouldn't have changed the amount of sugar, because the whole point is to see which temperature dissolves sugar more quickly.

Answer:

Explanation:

Speed = Distance/Time

Given

Distance = 200km

Total speed = 100+50 = 150km/hr

Time = Distance/Speed

Time = 200/150

Time = 1.33hr

b) Average speed in km/hr is 150km/hr

Convert to  m/s

150km/hr = 150 * 1000 m/1 * 3600s

150km/hr = 150,000/360

150km/hr = 416.67m/s

Answer: The axial tilt of the Earth

Explanation: The planet is tilted on its north-south axis by 23 degrees, making one hemisphere (out of northern and southern) closer to the sun than the other for half of the year. The hemisphere that's closer to the earth at any point experiences summer, and the one further away experiences winter.

Answer: The difference between the solstices is that one represents the point at which the hemisphere in question is closest to the sun (summer solstice) and furthest away (winter solstice)

Answer:

a group of organs working together to perform a function.

Explanation:

The magnitude of the force and the impulse applied to the car are  85714 N and  30000 N-s respectively.

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.

The magnitude of the force applied to the car = change in momentum/time interval

= (1200 kg × 25 m/s - 1200 kg×0)/0.35 second

= 85714 N.

The impulse applied to the car = change in momentum

= (1200 kg × 25 m/s - 1200 kg×0)

= 30000 N-s.

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Answer:

Explanation: please see attached file I attached the answer to your question.

The angle between the magnetic field and the wire's velocity is 33.2 degrees.

Since the potential difference = 71mv = 71 *10 ^-3 V

The length is 12 cm = 0.12m

The magnetic field i.e. B = 0.27T

The speed or v = 4 m/s

here we assume \(\theta\) be the angle

So,

e = Bvl sin\(\theta\)

So,

\(Sin\theta\) = e/bvl

= 71*10^-3 / 0.27 *4*0.12

= 0.5478

= 33.2 degrees

Therefore, the angle should be 33.2 degrees

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Answer:

Atmospheric Reentry Demonstrator

Explanation:

Of thats not right im sorry

The break shot speed of the player is determined as 96.5 ft/s.

use the following kinematic equation to determine the time of motion of the player.

h = vt + ¹/₂gt²

h = 0 + ¹/₂gt²

h = ¹/₂gt²

t = √(2h/g)

t = √(2 x 2.75/32.17)

t = 0.171 s

vx = x/t

vx = 16.5 ft / 0.171 s

vx = 96.5 ft/s

Thus, the break shot speed of the player is determined as 96.5 ft/s.

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Answer:    Vf = Vi + A(t)

Vf= -2+ (-9.8)(5)

Vf = -51 m/s

Explanation:

The final velocity is equal to the initial velocity plus the acceleration multiplied by the time

(-9.8) is used for the acceleration for this question because that is the speed at which things in free fall accelerate when they are on earth

-2 is used as the initial velocity because the ball was thrown in the negative direction which is down.

The time of 5 was given in the question so you can plug it in for time

Answer:

Explanation:

Given:

V₀ = 2 m/s

g = 9.8 m/s²

t = 5 s

____________

V - ?

Axis OX direct vertically down. Then:

V = Vₓ = V₀ₓ + g·t

V = 2 + 9.8*5 = 51 m

What the equation given?

Maximum velocity occurs at the equilibrium position

So

Now

Now

As we know the formula

\(\\ \rm\rightarrowtail V_max=A\omega\)

These expressions can be used

The maximum speed of the oscillating object will be given by \(V_{max}=Aw\)

An oscillation is defined as the repitative periodic motion of any object about its mean or equilibrium position.

The given equation is as follows:

x(t)=Acost

Maximum velocity occurs at the equilibrium position x=0

x(0)=Acos0

x(0)=A

Hence the maximum velocity will be  \(V_{max}=Aw\)

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Answer:

-12.1

Explanation:

i’m almost sure this is it, i’m checking my old answers

if not let me know and i’ll give you some more answers

Answer:

Explanation:

Who is #3 and where is he/she jumping and with what conditions?

The magnitude of the displacement vector refers to the length or amount of the displacement vector. Displacement is the change in position of an object. Displacement is a vector quantity, which means it has both magnitude and direction. In this question, a figure skater is gliding along a circular path of radius 3.93 m.

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Answer:

F = 3750 N

Explanation:

Given that,

Pressure, P = 150 Pa

Area, a = 25m²

We need to find the force applied. We know that, pressure is equal to the force acting per unit area. It can be given by :

\(P=\dfrac{F}{A}\\\\F=P\times A\\\\F=150\ Pa\times 25\ m^2\\\\F=3750\ N\)

So, the required force is 3750 N.

Answer:

- Final energy of neutron is 1.557 Mev

- Final energy of nucleus is 0.443 Mev

Explanation:

Given the that;

for ¹⁶O, A = 16

we know that Energy of neutron and nucleus after collision = ( A - 1 / A + 1)² E₀

so we substitute

Fe = ( 16 - 1 / 16 + 1)² × 2

= (0.8823)² × 2

= 1.557 Mev

therefore Final energy of neutron is 1.557 Mev

Final energy of nucleus will be

2 - Final energy of neutron

= 2 - 1.5569

= 0.443 Mev

therefore Final energy of nucleus is 0.443 Mev

Answer:

she is an American physicist, and the eighteenth president of Rensselaer Polytechnic Institute. She is also the second African-American woman in the United States to earn a doctorate in physics

The specific heat capacity of water is 960 J/(kg·°C).

The rate of heat loss from the tube is 21.1 W.

First we can use the formula for heat energy (Q) to solve this problem:

Q = m * c * ΔT

Where

For the first scenario, we have:

m = 0.1500 kg/m

Q = 25.2 W

ΔT = 17.4 °C - 15.2 °C = 2.2 °C

Substituting these values into the formula, we get:

25.2 W = 0.1500 kg/m * c * 2.2 °C

c = 960 J/(kg·°C)

Therefore, the specific heat capacity of water is 960 J/(kg·°C).

For the second scenario, we have:

m = 0.2318 kg/m

Q = 37.8 W

ΔT = 17.4 °C - 15.2 °C = 2.2 °C

Substituting these values into the formula, we get:

37.8 W = 0.2318 kg/m * 960 J/(kg·°C) * 2.2 °C + P

Where

Simplifying, we get:

P = 37.8 W - 0.2318 kg/m * 960 J/(kg·°C) * 2.2 °C

P = 21.1 W

Therefore, the rate of heat loss from the tube is 21.1 W.

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Answer:

LOL PUEDO HABLAR CON

Explanation:

Answer:

Whats the anwser/????

Explanation:

The motion of an apple when it falls from a tree is

b) Accelerating

The motion of apple is when it falls from a tree is the case of free fall.

During free fall , the initial velocity of the apple or any object is zero but it gains some velocity due to gravitatonal acceleration .

An object with an initial velocity of 5m/s has a constant acceleration of \(2m/s^2\) .The object has traveled a distance of 50 meters when it is speed is 15m/s how far has us travelled​

To find the distance traveled by the object, we can use the equation:

\(v^2 = u^2 + 2as\)

where v is the final velocity, u is the initial velocity, a is the acceleration, and s is the distance traveled.

Given:

Initial velocity (u) = 5 m/s

Acceleration (a) = 2\(m/s^2\)

Final velocity (v) = 15 m/s

We need to solve for s.

Rearranging the equation, we have:

s =\((v^2 - u^2)\) / (2a)

Substituting the given values, we get:

s = \((15^2 - 5^2)\)/ (2 * 2)

s = (225 - 25) / 4

s = 200 / 4

s = 50 m

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Answer:

Acceleration due to gravity

Explanation:

The mass of the soda can is

\(m = \dfrac{W}{g} = \dfrac{4.7\:\text{N}}{9.8\:\text{m/s}^2} = 0.48\:\text{kg}\)

The weight of this same soda can on Planet X is

\(W = mg_p = (0.48\:\text{kg})(1.82\:\text{m/s}^2) = 0.87\:\text{N}\)

Answer:

Microeconomics is a part of economics and the study of decisions made by people and businesses regarding the allocation of resources, and prices at which they trade goods and services.

Microeconomics helps business planning i.e. helps the business community to plan their costs, production, etc. in anticipation of demand in order to maximize profits. Microeconomics is useful in explaining how market mechanism determines the price in a free market economy.

it is called groups or families.

Answer:

groups or families

Explanation:

The vertical column of the periodic table are called groups or famileis because of their similar chemical behavior.

Answer:

Explanation:

Sure, I'd be happy to help you with the question!

Let's denote the input as x. According to the function machine, the input is multiplied by 6 and then 80 is subtracted from the result to obtain the output.

So, the function can be written as:

Output = (6 * x) - 80

Now, the problem states that the input is the same as the output. Therefore, we can set up the equation:

x = (6 * x) - 80

Let's solve this equation to find the value of x:

x = 6x - 80

Subtracting 6x from both sides, we get:

x - 6x = -80

Combining like terms, we have:

-5x = -80

Dividing both sides by -5, we find:

x = (-80) / (-5)

Simplifying the expression, we have:

x = 16

Therefore, the input (x) that results in the input being the same as the output is 16.

To work out these types of questions, it's important to carefully read the instructions and understand the operations being performed in the function machine. Then, you can set up an equation with the input and output, and solve for the unknown value. Always double-check your solution to ensure it satisfies the given conditions of the problem.

Answer:

16

Explanation:

(x*6) - 80 = x

Multiply the parentheses

6x - 80 = x
Add 80 to each side to get
6x = x + 80
Subtract x from both sides to get
5x = 80
Divide both sides by 5
x = 16

The work and energy theorem allows finding the result for where the kinetic energy of the car is before stopping is:

    The energy becomes:

Work is defined by the scalar product of force and displacement.

          W = F . d

Where the bold indicate vectors, W is work, F is force and d is displacement.

The work energy theorem relates work and kinetic energy.

            W = ΔK = \(K_f - K_o\)

In this case the vehicle stops therefore its final kinetic energy is zero, consequently the work is:  

          W = - K₀

Therefore, the initial kinetic energy that the car has is converted into work in its brakes.  In reality, if assuming that there is friction, an important part is transformed into non-conservative work of the friction force, this work can be seen in a significant increase in the temperature of the discs on which the work is carried out.

In conclusion, using the work-energy theorem we can find the result for where the kinetic energy of the car is before stopping is:

    The energy becomes:

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The two strings are taut. When the system is released from rest, it accelerates at 2 m/s2 then, Mass of A = 8m/5 kg.

Let the mass of the body A be ‘m’.

The two strings are taut so they exert a tension ‘T’ on body A.

Let ‘a’ be the acceleration produced in the system.

The free body diagram of body A is given below: mA + 2T = mA + ma = mA + m(2)mA + 10T = mA + ma = mA + m(2)

As the two strings are taut, we can say that tension in both strings is equal.

Therefore 2T = 10T or T = 5T As the body A is resting on a smooth horizontal table, there is no friction force acting on the body A.

The net force acting on body A is the force due to tension in the strings. ma = 2T – mg …(1)

As per the given problem, the system is released from rest.

Hence the initial velocity is zero.

Also, we are given that the system accelerates at 2 m/s2.

Therefore a = 2 m/s2 …(2)

From the equations (1) and (2), we get, m(2) = 2T – mg …(3)⇒ m(2) = 2×5m – mg⇒ 2m = 10m – g⇒ g = 8m/5

Thus, the mass of A is 8m/5 kg.

Answer: Mass of A = 8m/5 kg.

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Answer:

planet that is farthest away is planet X

kepler's third law

Explanation:

For this exercise we can use Kepler's third law which is an application of Newton's second law to the case of the orbits of the planets

          T² = (\(\frac{4\pi ^2}{ G M_s}\) a³ = K_s a³

Let's apply this equation to our case

          a = \(\sqrt[3]{ \frac{T^2}{K_s} }\)

for this particular exercise it is not necessary to reduce the period to seconds

Plant W

             10² = K_s  \(a_{w}^3\)

             a_w = \(\sqrt[3]{ \frac{100}{ K_s} }\)

             a_w = \(\frac{1}{ \sqrt[3]{K_s} }\)  4.64

Planet X

             a_x = \(\sqrt[3]{ \frac{640^3}{K_s} }\)

             a_x = \frac{1}{ \sqrt[3]{K_s} } 74.3

Planet Y

              a_y = \(\sqrt[3]{ \frac{80^2}{K_s} }\)

              a_y = \frac{1}{ \sqrt[3]{K_s} } 18.6

Planet z

              a_z = \(\sqrt[3]{ \frac{270^2}{K_s} }\)

              a_z = \frac{1}{ \sqrt[3]{K_s} } 41.8

From the previous results we see that planet that is farthest away is planet X

where we have used kepler's third law

Mass A = 2000 kg

velocity A = 12 m/s (North)

Mass B= 4000 kg

Velocity B= -8 m/s (South)

We adopt that North is positive and South is negative.

Conservation of momentum (p)

• Pi = Pf

• ma * va + mb*vb = (ma+mb) Vf

Where Vf is the final velocity after the collision.

Replacing:

(2000* 12 ) + (4000*-8)= (2000+4000) vf

24,000- 32,000 = 6,000 vf

-8,000 = 6,000 vf

-8,000 / 6,000 = vf

vf = -1.3334 m/s

vf = 1.3334 m/s , South