Stress that has a beneficial effect on us is called

The negative outcome indicates a flaw in the information provided or how the issue was put up because the flow rate cannot be fictional or negative.

It can be expressed as:

P1 + (1/2)ρv1^2 + ρgh1 = P2 + (1/2)ρv2^2 + ρgh2

the terms involving h cancel out in the equation, and we can solve for v1:

P1 + (1/2)ρv1^2 = P2 + (1/2)ρv2^2

v1 = √(P2 - P1))/ρ)

Substituting the given values for P1, P2, and ρ into the equation,

\(v1 = \sqrt(1.22 x 10^5 - 1.65 x 10^5))/1000) = \sqrt(-0.43)\)

B) The same formula (v2) may be used to get the flow rate in the top part.

v2 = sqrt((2(P1 - P2))/ρ)

\(v2 = \sqrt{2} (1.65 x 10^5 - 1.22 x 10^5))/1000) =\sqrt(0.86) ≈ 0.93 m/s\)

C) The following formula may be used to get the volume flow rate (Q) via the pipe:

Q = Av

A1 = πr1\(1^{2}\); at point 2, the cross-sectional area A2 = πr\(2^2\).

we get:

Q = A1v1 = πr1^2v1

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Answer:

According to the Big Bang Theory, the density and temperature of the Universe is lower now than in the past.

Hope this answer correct :)

The density and the temperature of the universe should be lower as compared to the past.

According to this theory, it description of the way the universe should be started is provided by the astronomers. The temperature of the universe should be very much hot, the universe size should be small also the universe should be super dense. However, the universe size should be expanded and the temperature should be colder according to the time.

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The length of time that an action or state persists. The given L-shaped object made of two rods oscillates at a frequency of 2π√√2L/3g.

The rod weighs m grams.

The length of a single rod is L.

If it is connecting at, as indicated by the query, then the moment of inertia of the combined system follows.

mL²/3+3L²/3=2mL²/3

Here, I denotes the rod's moment of inertia, d denotes the separation of the center of gravity from the fixed point, and T denotes the length of time the L-shaped object oscillates.

Length of pendulam

Lcos45=L*1/√2=L/√2

Caluclate the time period

T=2π√I/mgl

=2π√2*mL²*√2/3*2mgl

oscillates at a frequency = 2π√√2L/3g

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Answer:

See below

Explanation:

Is that 600 WATT lamp ?   If so:

   power =  I V

      600 w   =  2 A   * v

       v = 300 v

Objects 1 and 2 attract each other with an electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be four units.

Coulomb's law can be expressed as:

F = k × (q1 × q2) / r²

In which:

F = electrostatic force

k = electrostatic constant (k = 9 × 10⁹ N·m²/C²)

q1 and q2 = the charges of the objects

r =  distance between the objects

Let's consider that the initial electrostatic force in between objects 1 and 2 is 36.0 units.

F1 = 36.0 units

Next, if the distance is considered between the objects is tripled, the new distance (r') changes into three times the initial distance (r):

r' = 3 ×  r

To determine the new electrostatic force (F'), replacement r' into Coulomb's law:

F' = k  × (q1  × q2) / (r')²

Place r' = 3r:

F' = k × (q1 × q2) / (3r)²

= k × (q1 × q2) / 9r²

The new force will be one-ninth (1/9) of the initial force since the electrostatic force (F') is directly proportional to (q1 q2) and inversely proportional to r2.

F' = (1/9) ×  F1

= (1/9) × 36.0

= 4.0 units

Thus, objects 1 and 2 attract each other with an electrostatic force of 36.0 units. If the distance separating Objects 1 and 2 is tripled, then the new electrostatic force will be 4 units.

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Points 2 and 5  is the point the car have the least amount of potential energy. Hence option d is correct.

Potential energy is defined as the energy that an object stores as a result of its position in relation to a zero position. Any object that is raised from rest has energy that can be released at a later time; for this reason, it is referred to as potential energy.

The object has a maximum amount of gravitational potential energy and no kinetic energy at the top of the roller coaster (assumed there is no velocity). The gravitational potential energy of the object decreases and the kinetic energy rises as it starts to descend to the bottom.

Thus, points 2 and 5  is the point the car have the least amount of potential energy. Hence option d is correct.

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The speed of the cat when it slid off the table would be 4.43 m/s.

Speed is defined as the rate of motion or action, or the rate of change of something. It is typically measured in terms of distance over time, such as kilometers per hour (km/h) or miles per hour (mph). Speed can also be expressed in terms of velocity, which is the rate of change in position. Velocity is measured in meters per second (m/s). In physics, speed is a scalar quantity, meaning it is a magnitude, or numerical value, without direction.

The speed of the cat can be calculated using the equation v^2=2gh, where v is the speed, g is the acceleration due to gravity (9.81 m/s^2), h is the height of the table (1.0 m).
So, the speed of the cat when it slid off the table would be:
v = sqrt(2*9.81*1.0) = 4.43 m/s

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Answer:

450m

Explanation:

\(s = ut + \frac{1}{2} a {t}^{2} \\ s = 0 + t + \frac{1}{2} a {t}^{2} \\ \frac{1}{2 } \times 9 \times {10}^{2} = 450m\)

Answer:

88 ft / sec = 60 mph

Thus 97/60 * 88 = 142 ft/sec      maximum speed of cannonball

R = V^2 sin 2 θ / g = 142^2 / 32 = 630 ft

Using 3.28 ft / m

630 ft / 3.28 f/m = 192 m is the maximum range of the cannonball

Vy = 142 ft / sec * sin 45 = 100 ft/sec    vertical speed at 45 deg

Tup = 100 ft/sec / 32 ft/sec^2 = 3.12 sec    time to reach height

T = 2 * 3.12 = 6.24      total time in air when fired at 45 deg

During a power outage, storm radios rely on backup batteries to continue operating. This process involves several stages of energy conversion.
Firstly, the energy stored in the backup batteries is converted into electrical energy when the radio is turned on.

The electrical energy is then converted into electromagnetic energy when the radio waves are transmitted from the radio antenna.
When these radio waves reach the receiver, they are converted back into electrical energy, which is then converted into sound energy that can be heard through the speaker.
Throughout this energy conversion process, there is some energy loss due to factors such as resistance in the wiring and inefficiencies in the battery and speaker. However, the backup batteries are designed to provide enough energy to power the radio for a significant period, ensuring that users can stay informed and connected during a power outage.
In summary, the energy conversion sequence during a power outage involves the conversion of stored chemical energy in the battery to electrical energy, then to electromagnetic energy, and finally to sound energy that can be heard through the speaker.

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Answer:

Its C

Explanation:

My teacher did it for me and it was right.

To continue with constant acceleration, one will have to push the cart longer before releasing it. In this scenario, the cart is given a push on a horizontal frictionless table. Thus, the correct answer is option A

The force that pushes the cart will initially be equal to the force of friction acting against the movement of the cart. The cart will keep on accelerating if the push on the cart is greater than the force of friction. However, if the force of friction is equal to the applied force, the cart will move at constant speed.Constant acceleration implies that the object has the same increase in speed per unit of time.

In this scenario, if the cart is to continue with a constant acceleration, then one will have to push the cart longer before releasing it. This is because the force of friction will continue to act on the cart as it moves, and hence the cart will slow down gradually to a halt after a short time. C. Nothing.

It is impossible to give the cart continuous acceleration.
On a frictionless table, once the cart is given a push, it will continue to move at a constant velocity due to the absence of any external force acting on it. It is impossible to achieve continuous acceleration without applying a continuous external force on the cart. The correct option is A.

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The eccentricity of Deimos' orbit is much closer to 0 than that of Phobos' orbit. Therefore, Deimos has more circular orbit than Phobos.

Curved path that an object in space takes around another object due to gravity is called orbit.

To calculate the eccentricity of orbits of Phobos and Deimos, we can use the formula:

e = distance between the focus points / major axis length

For Phobos:

e = 281 km / 18,800 km = 0.0149

For Deimos:

e = 23.4 km / 46,918 km = 0.000497

As we see, the eccentricity of Deimos' orbit is much closer to 0 than that of Phobos' orbit. Therefore, Deimos has a more circular orbit than Phobos.

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(1) The acceleration of the car is determined as 17.42 m/s².

(2) The acceleration of the crate is determined as 8.89 m/s².

The acceleration of the car is calculated from the net force acting on the car.

∑F = ma

F - Ff = ma

F - μW = ma

where;

m = W/g

m = (9320)/(9.8)

m = 951.02 kg

2(9320) - 0.222(9320) = 951.02a

16,570.96 = 951.02a

a = 17.42 m/s²

F - μW = ma

F - μmg = ma

302 - 0.75(18.6 x 9.8) = 18.6a

165.29 = 18.6a

a = 8.89 m/s²

Thus, the acceleration of the car is determined as 17.42 m/s².

The acceleration of the crate is determined as 8.89 m/s².

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The final speed of the car is 25.6 m/s.

The distance travelled by the car is 82.84 m.

The final speed of the car is calculated by applying the first equation of motion as shown below.

v = u + at

where;

v = ( 18 m/s ) + ( 2 m/s² ) x ( 3.8 s )

v = 25.6 m/s

The distance travelled by the car is calculated as follows;

s = ut + ¹/₂at²

s = ( 18 x 3.8 ) + ¹/₂ ( 2 )(3.8²)

s = 82.84 m

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Voltage = (current) x (resistance)

Voltage = (4.00 A) x (330 Ω)

Voltage = 1,320 V  (D)

The average force exerted by the golf club on the golf ball is equal to 1769.2N.

Force acting on an object can be described as the influence that changes the state of the object of motion or rest. The S.I. unit of force is Newton (N) and force is a vector parameter.

The mathematical formula of the 2nd law of motion for force is written as follows:

F = ma

Given the mass of the ball, m= 0.046 Kg

The golf club was in contact with the ball for time, t = 1.3 ms = 1.3 ×10⁻³s

The speed of the golf ball, v = 50 m/s

We know that, equation of motion: \(v = u + at\)

50 = 0  + a (1.3 ×10⁻³)

a = 38.46 ×10³ m/s²

The average force on the golf ball will be:

F = ma = 0.046 ×38.46 ×10³

F = 1769.2 N

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Answer:

8s

Explanation:

period of pendulum = 2π*√(l/g)

l = length of pendulum

period for 1st pendulum = 4 sec

thats 2π*√(l/g) = 4

for 2nd pendulum

length = 4 l

substitute 4l in formula

2π*√4l/g = 2*4= 8s

Given the data from the question, the period of the pendulum 2 is 8 s

The period of pendulum 2 can be obtained as illustrated below:

T²₁ / L₁ = T²₂ / L₂

4² / L = T²₂ / 4L

Cancel out L

4² = T²₂ / 4

Cross multiply

T²₂ = 4² × 4

T²₂ = 64

Take the square root of both sides

T₂ = √64

T₂ = 8 s

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While the Sun's corona is incredibly hot, the combined effects of distance, the vacuum of space, Earth's atmosphere, and the distribution of solar energy help protect us from being incinerated.

The Sun's corona indeed has an extremely high temperature, reaching up to millions of degrees Celsius. However, despite this intense heat, we are not incinerated due to a combination of factors.

Firstly, the corona's high temperature does not directly translate to an increase in heat transfer to objects at a distance from the Sun. Heat transfer occurs through conduction, convection, and radiation, but in the case of the Sun, the distance and vacuum of space act as insulating factors, significantly reducing the amount of heat reaching Earth.

Secondly, Earth's atmosphere plays a crucial role in protecting us from the Sun's extreme temperature. The atmosphere acts as a shield, absorbing and scattering a significant portion of the Sun's radiation. It filters out the most harmful ultraviolet and X-ray radiation, preventing it from reaching the surface.

Additionally, the Sun's energy is emitted in all directions, and only a small fraction reaches Earth. The vastness of space and the Sun's distribution of energy ensure that the Earth receives a manageable amount of solar radiation, which supports life rather than incinerating it.

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Answer:

D

Explanation:

Answer:

A

Explanation:

The magnitude of the kinetic friction force between the crate and the floor is 33.15 N.

The magnitude of kinetic frictional force is determined by applying Newton's second law of motion as shown below;

F - Ff = ma

where;

Subsitute the given parameters and solve for kinectic frictional force

197 - Ff = 49.1(3.337)

197 - Ff = 163.85

Ff = 33.15 N

Thus, the magnitude of the kinetic friction force between the crate and the floor is 33.15 N.

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Answer: B im sorry if its wrong

Explanation:

Answer:

Whats the question here?

From the darkest part of the object's shadow, you would be able to see a small amount of the light source. There would be a small amount of light that is visible, but it would be faint. On the other hand, from the lightest part of the shadow, you would be able to see much more of the light source. The light source would be far brighter and more visible, and you would be able to identify the source of the light.

Answer:

C

Explanation:

Excavation costs are generally based on the time involved multiplied by a standard rate.

Answer:

Explanation:

If an object is made to fall by a height h and t be the time taken by him to touch the ground

s = ut + 1/2 gt²

h = 1/2 gt² where initial velocity is zero .

If time is required to be made 3 times , so time of fall = 3 t

new height required

H = 1/2 g ( 3t )²

= 1 / 2 x 9 x t²

= 9 h

So new height will be 9 times the old height .

According to the zeroth law of thermodynamics, no heat is transferred between the two objects if both the objects are at the same temperature.

Thus, no heat transfer between the water, pot, and air occurs according to the zeroth law of thermodynamics.

Hence, the zeroth law of thermodynamics is the correct answer.

Answer:

The correct answer is "\(4.49\times 10^{10} \ joules\)".

Explanation:

According to the question,

The work will be:

⇒ \(Work=-\frac{kQq}{R}\)

              \(=-\frac{1}{4 \pi \varepsilon \times (18-30)\times 3\times 0.2}\)

              \(=-\frac{1}{4 \pi \varepsilon \times (-12)\times 3\times 0.2}\)

              \(=\frac{0.3978}{\varepsilon }\)

              \(=4.49\times 10^{10} \ joules\)

Thus the above is the correct answer.    

We have that the workdone  is mathematically given as

W=4.49*10e10 J

From the question we are told

Generally the equation for the workdone   is mathematically given as

W=-kQq/R

Therefore

0.3978/ε0 =-1/(4πε0*(18-30)*3*0.2

Hence

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The ranking is based on the tilt of the Earth's axis and its orbit around the Sun. The figure at 40°N in June receives the most daylight because it is located at a high latitude during the summer solstice in the Northern Hemisphere. The Earth's axis tilts towards the Sun, resulting in longer days and shorter nights. The figure at 40°S in December receives a moderate amount of daylight as it is located at a lower latitude during the summer solstice in the Southern Hemisphere.

The figure at 40°N in December experiences less daylight because it is located at a high latitude during the winter solstice in the Northern Hemisphere, with shorter days and longer nights. Lastly, the figure at 40°S in June receives the least amount of daylight as it is located at a lower latitude during the winter solstice in the Southern Hemisphere, where the days are shortest and the nights are longest. Based on the information given, the ranking of figures based on the amount of daylight they experience in a 24-hour period, from most to least.

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