can there be shadows at night outside?

Answer:

i can't sorry

Explanation:

I didn't really pay attention in that class

Answer:

what

Explanation:

Answer:

El periodo del péndulo simple, para oscilaciones de poca amplitud, viene determinado por la longitud del mismo y la gravedad.

Explanation:

No influye la masa del cuerpo que oscila ni la amplitud de la oscilación. Donde: T: Periodo del péndulo.

The original source of the energy found in the coal that was used to produce the electricity for the light bulb was the sunlight. Coal was formed from the remains of dead plants and animals that lived millions of years ago. option c.

In ancient times, plants absorbed energy from the sun to form their tissues. Coal is a type of fossil fuel formed from the decayed remains of ancient plants that were buried deep beneath the earth's surface. The energy stored in the plants was converted into coal over time through a process called carbonization. When coal is burned in a coal-fired power plant to produce electricity, the energy stored in the coal is released as heat. This heat is used to create steam, which in turn drives a turbine to produce electricity. The energy that powers the light bulb, therefore, comes from the burning of coal in the power plant. However, the original source of the energy found in the coal was the sunlight that the plants absorbed during their lifetime. Coal-fired power plants are a major source of electricity around the world. They are relatively inexpensive to build and maintain, and coal is abundant in many parts of the world. However, burning coal also releases large amounts of carbon dioxide and other greenhouse gases into the atmosphere, contributing to climate change and other environmental problems.

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Answer:

25 N  in the direction of your push

Explanation:

The friction force acts against your pushing force....it reduces the net amount of force you are exerting

Net force =  40 - 15 = 25 N  

Answer: The Sun measures 1.4 million km across, while the Moon is a mere 3,474 km across. In other words, the Sun is roughly 400 times larger than the Moon. But the Sun also happens to be 400 times further away than the Moon, and this has created an amazing coincidence.

Explanation:

The level of flexibility will affect my performances in football. Football

requires some level of flexibility to do certain things.

Flexibility will enable me change speed and direction easily when there is a

counter attack by the opponents. It will also assist in using some techniques

such as adding more curve on the football with the feet in order to score

goals.

Flexibility will also ensure that there will be lesser injury concerns because there will be less sprains or other muscle related injuries.

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A sea-level pressure of 750 millibars indicates an unrealistically high pressure.

A sea-level pressure of 750 millibars is abnormally high and not commonly observed in normal weather conditions. Typically, sea-level pressure ranges between 950 and 1050 millibars.

Therefore, option e) stating that it represents unrealistically high pressure is the correct answer. It is important to note that a pressure of 1013.25 millibars is considered standard atmospheric pressure at sea level, while a pressure of 750 millibars is significantly lower, suggesting an anomalous and extreme situation.

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Answer:

The tissues in a multicellular organism requires a circulatory system in other to deliver oxygen and food to the tissues while also removing carbon dioxide and metabolic wastes due the complexity of these activities

Explanation:

Multicellular organisms are organisms that are made of more than one cell. the more cells an organism has the more complex certain activities might be for the organism hence the tissues in a multicellular organism requires a circulatory system in other to deliver oxygen and food to the tissues while also removing carbon dioxide and metabolic wastes

The object is not moving, so the net force acting on it is zero.

The two given forces act in the same direction with a total magnitude of 2 N + 10 N = 12 N.

The third force acts counter to these with some magnitude F to give a net force of 0, so that by Newton's second law

F = 12 N

To determine the greatest distance you can be from the base camp at the end of the third displacement, regardless of direction, we need more specific information about the magnitudes and directions of the displacements.

Displacement is a vector quantity that has both magnitude and direction. The distance covered during multiple displacements depends on the individual magnitudes and directions of each displacement. Without specific values, it is not possible to determine the exact greatest distance from the base camp.

If you provide the magnitudes and directions of the three displacements, I can help you calculate the total distance and determine the maximum possible distance from the base camp at the end of the third displacement.

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Answer:

Put away guns in a lockbox that is secure and in a discrete location

Explanation: Took the test. Trust me ;)

Answer:

Put away guns in a lockbox that is secure and in a discrete location

Explanation: Just Trust Me

Answer:

The answer is

Explanation:

The velocity or speed of an object can be found by using the formula

\(velocity \: = \frac{distance}{time} \)

From the question

time taken to travel = 10 hours

distance covered = 550 miles

Substitute the values into the above formula and solve for the velocity

That's

\(velocity = \frac{550}{10} \)

We have the final answer as

Hope this helps you

Answer:

\(f=6.97\times 10^{14}\ Hz\)

Explanation:

Given that,

Wavelength, \(\lambda=430\ nm=430\times 10^{-9}\ m\)

We need to find the frequency of the violet light.

We know that the relation between frequency and wavelength is given by :

\(f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{430\times 10^{-9}}\\\\f=6.97\times 10^{14}\ Hz\)

So, the frequency of violet light is \(6.97\times 10^{14}\ Hz\).

Answer:

Only kinetic.

Explanation:

Potential energy means it has the potential to move. Not something already in motion.

Answer:

yes

Explanation:

it hasn't stopped moving so it still has kinetic energy and it hasn't reached what is considered 0 so yes it has both potential and kinetic energy

if you need more of an explanation let me know and ill fix it

Answer:b) atoms

Explanation:which are in turn made up of protons, neutrons and electrons

Answer:

B. Hope it helped brainiest plz

Explanation:

B. is that answer

Explanation:

Its organism are one cell I think

Answer:

#2

Explanation:

Part A. We are given that a dart travels from rest to a velocity of 30 m/s with an acceleration of 330 m/s^2 to determine the time we will use the following equation of motion:

Where:

Since the dart is launched from rest this means that the initial velocity is zero, therefore:

Now, we divide both sides by "a":

Now, we plug in the values:

Solving the operation:

Part B. Now, we are asked to determine the distance. To do that we will use the following equation of motion:

Now, we divide both sides by "2a":

Now, we plug in the values:

Solving the operations we get:

Therefore, the distance is 1.36 meters.

Answer:

101201.2 Pascal.

Explanation:

Given that the difference h between the two liquid levels is 2.0 cm. The density of the liquid is 800 kg /m3.

Calculate the difference between the pressure of the gas and atmospheric

pressure.

The pressure of the gas can be calculated by using the formula

Pressure = density × acceleration due to gravity × height

Substitute all the parameters into the formula

Pressure = 800 × 2/100 × 9.8

Note that the height is converted to metre.

Pressure = 156.8 Pascal

pressure difference = 101358 - 156.8

Pressure difference = 101201.2 Pascal

The correct option is 20000 kg m /s.

What is Momentum ?

Momentum is a concept in physics that describes an object's tendency to continue moving in its current direction at a constant speed. It is a vector quantity, meaning it has both magnitude and direction. The momentum of an object is defined as the product of its mass and velocity, and is represented by the equation: p = mv, where p is momentum, m is mass, and v is velocity.

In simple terms, momentum can be thought of as the "motion" of an object, and the larger the mass and velocity of an object, the greater its momentum. Momentum is a conserved quantity, which means that the total momentum of a system remains constant unless acted upon by an external force.

Given , Mass = 1000kg

Speed = 20 m/s

momentum = mv = 20000 kg m /s

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The reaction is the force applied by the player's glove on the ball.

Newton's third law of motion states that when one body exerts a force on the other body, the first body experiences a force which is equal in magnitude in the opposite direction of the force which is exerted”.

The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.

The direction of the force on the first object is opposite to the direction of the force on the second object.

According to this question, a player catches a ball. The action is the force to the ball against the player's glove while the reaction or opposite force will be the player's glove against the ball.

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According to the law of conservation of momentum, the total momentum of a system remains constant if no external forces act on it the total momentum of the system before and after the collision will be conserved. The correct option d.

The law of conservation of momentum states that in a closed system, the total momentum before a collision is equal to the total momentum after the collision, provided there are no external forces acting on the system. The law applies to both linear and angular momentum.

In the given scenario, the total momentum of the system before the collision is the sum of the momenta of the two disks. After the collision, the total momentum of the system should still be the same as before the collision if no external forces are present.

The individual velocities and directions of the disks after the collision may change, and they may continue to move at different velocities or even come to rest. The law of conservation of momentum does not dictate the velocities or outcomes of the individual objects involved in the collision. It only states that the total momentum of the system remains constant.

Therefore, option d) The total momentum of the system before and after the collision will be conserved is the correct statement according to the law of conservation of momentum.

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The magnitude of the electrostatic force between the two charges is found to be 0.096N.

The 7.10 nC charge is located 1.67 m away from a 4.22 nC point charge.

The force between the objects will be equal, it means that the electrostatic force between them will be equal measured from any charge in a particular medium.

The formula for the force is,

F = KQ₁Q₂/d²

Where,

Q₁ and Q₂ are the magnitude of the charges,

K is the constant,

d is the distance between them,

Putting values,

F = 9 x 10⁹ x 7.10 x 4.22 x 10⁻¹²/(1.67)²

F = 0.096N

So, the electrostatic force between them is 0.096N.

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Answer:

C

Explanation:

through the desk....here desk is the student's medium to hear the sound. its oblivious because when he lifts his head away from the desk he hears nothing else

Buoyancy force can be calculated with the equation

\(Fb = Vs × D × g\)

where

In this case, the weight of the ball is 5 kg and the density of the ball is 2× 10⁴kg/m³

Therefore the volume is given as

\(v = \frac{m}{d} = \frac{5}{2 \times 10 {}^{4} kgm {}^{ - 3} } \\ v = \: \frac{5}{20000} m {}^{ - 3} \)

Substituting the given values in the equation, we get,

\(Fb=Vs \times D \times g \\ Fb = \frac{5}{20000} m {}^{3} \times 5000kgm {}^{ -3} \\ \times10ms {}^{ - 2} \\ = 12.5N\)

Repeating the experiment multiple times and averaging the results can help reduce measurement errors and improve accuracy.

Acceleration is a physical quantity that describes the rate at which the velocity of an object changes over time. If an object is moving in a straight line, acceleration can be positive or negative depending on whether the object is speeding up or slowing down. If the object is turning or changing direction, acceleration is not only a change in speed but also a change in direction.

The most common formula to calculate acceleration is \(a = (v_f - v_i) / t,\)where "a" is acceleration, "\(v_f\)" is the final velocity of the object, "\(v_i\)" is the initial velocity of the object, and "t" is the time interval during which the velocity changes.

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Answer:

at T = 0ºC the change of state is from the solid state to the gaseous state

Explanation:

In this exercise we are asked about the changes of state, from the data we will assume that the material is water.

Water can exist in three solid states, liquid and gas, in a graph of pressure ℗ against temperature (T) there is a point called triple at T = 0.01ºC, below this point the curve has two states at high pressure solid and low pressure gas.

As a result of the previous ones at T = 0ºC the change of state is from the solid state to the gaseous state

Answer:

, pfx = pix + Jx.

Explanation:

The momentum principle tells us that impulse transfers momentum to an object.

If an object has 2 kgm/s of momentum, a 1 kgm/s impulse delivered to the object

increases its momentum to 3 kgm/s. That is, pfx = pix + Jx.

Just as we did with energy, we can represent this “momentum accounting” with a

momentum bar chart. For example, the bar chart of FIGURE 11.6 represents the ball

colliding with a wall in Figure 11.4. Momentum bar charts are a tool for visualizing

an interaction