A tennis ball (mass=0.06 kg) is hit straight upward with an initial speed of 50 m/s. How high would it go if air resistance is negligible? Solve using the work-energy theorem.

An air bubble of volume 20 cm³ is at the bottom of a lake 40 m deep, where the temperature is 4.0°c. the bubble rises to the surface, which is at a temperature of 20°c. take the temperature of the bubble’s air to be the same as that of the surrounding water. just as the bubble reaches the surface

A. Fluid Friction B. Yes, there is more mass on the boat.

Explanation:

Not very sure about B but goodluck.

Answer:

33792 feet

Explanation:

1 mile is 5280 feet. 6.4 x 5280 = 33792

Hope this helps you :)

Answer:

What she can do to collect the data is;

B. Gather a few oranges and see how many seeds are in each

Explanation:

The quantity Katie wants to find out is the number of seeds contained in each orange

Therefore, the required population = The number of seeds in a given orange

The method of estimation of the number of seeds per orange is sampling method, whereby the number of seeds in each of the orange in the sample is used to as an hypothesis as to the number of seeds expected in each orange of the entire population.

Therefore, in order to collect the data, she can gather a few oranges and see how many seeds are in each.

Answer:

that's all I could do.hope it helps.

The Difference Between A Mile And A Nautical Mile is that mile is commonly used for terrestrial measurements, while the nautical mile is specifically used for navigation at sea.

A mile and a nautical mile are both units of measurement for distances, but there is a difference between the two. A mile is a standard unit of distance commonly used in the United States and is equal to approximately 1.609 kilometers. A nautical mile, on the other hand, is a unit of measurement used specifically for navigation at sea and is equivalent to 1.852 kilometers, or approximately 1.1508 miles.

In other words, a nautical mile is longer than a standard mile by about 0.1508 miles. This difference is important for navigation on the open sea, where a nautical mile provides a more accurate measure of distance, taking into account the curvature of the earth and the effects of latitude on measurements.

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Answer:

Cho hai quả cầu nhỏ trung hòa điện đặt trong không khí, cách nhau 40cm và sử có bốn nhân 10 mũ 12 electron tư quả cầu này di chuyển sang qua câu kia hỏi khi đó hai quả cầu Vũ thấy đầy nhau tỉnh đô lớn của lực đó

Answer:

88N

Explanation:

m = 9kg

a = 9.8m/s²

F = ma = 9 × 9.8

F = 88N

Answer:

V=∆s/∆t

V=800/4

V=200

you have to change 8meters into centimeters and please let me know if I'm wrong

Answer:

1. f=1T. where: f is the frequency of the wave in hertz. T is the period of the wave in seconds.

2. f=vλ where: f is the frequency of the wave in hertz. v is the velocity of the wave in meters per second. λ is the wavelength of the wave in meters

3. f=cλ

Explanation:

Answer:

See below:

Explanation:

Motion is what makes something move, there are different types and different ways to make motion, motion also comes with forces.

To figure out the motion type, we can simply see the wording of the sentence:

1) Air Resistance is the motion of air, it would be pushing up to stop the fall a bit.

2) We can neglect the resistance by being straight so we have to deal with less of it.

3) This motion is not in motion as nothing happened/happening.

4) This is friction as the friction of the ground and turning the car is slowing it down.

5) The motion is going in any direction as it depends on the start of the asteroid and its starting angle.

6) If its not moving; there is no motion.

7) We can neglect it by going on a 0 degree slope.

8) We simply have to do nothing as its already a law and will happen naturally.

9) The motion is basic motion with some friction due to its scenario.

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Answer:

The wavelength is 2 meters

Explanation:

The relationship between the frequency, the speed and the wavelength is given by the relation;

v = f × λ

The given parameters are;

The distance of the duck from the edge of the pond = 12 m

The number of ripples produced per second = Frequency, f = 2 Hz

The time it takes the ripple to reach the edge of the pond after travelling past the duck = 3 seconds

Therefore, speed of the wave, v = Distance/time = 12 m/(3 s) = 4 m/s

The wavelength, λ, is therefore;

λ = v/f = (4 m/s)/(2 Hz) = 2 meters.

Answer:

it's gravitational potential energy would have converted to kinetic energy half way back when it's falls

In both situations, the two forces that form a Newton's third-law force pair with equal magnitudes are the buoyant force exerted by the liquid on the block and the weight of the block exerted on the liquid.

When a block is floating in a container of liquid, it experiences two forces: the weight of the block and the buoyant force exerted by the liquid. The weight of the block is given by the equation:

\(\[ F_{\text{{weight}}} = mg \]\)

where m is the mass of the block and g is the acceleration due to gravity. The buoyant force exerted by the liquid on the block is equal to the weight of the liquid displaced by the block. It can be calculated using Archimedes' principle:

\(\[ F_{\text{{buoyant}}} = \rho V_{\text{{submerged}}} g \]\)

where \(\( \rho \)\) is the density of the liquid and \(\( V_{\text{{submerged}}} \)\) is the volume of the block that is submerged in the liquid.

When the block is replaced with a block of mass 2m , the weight of the block doubles while the buoyant force remains the same. Therefore, the two forces that form a Newton's third-law force pair with equal magnitudes in both situations are the buoyant force exerted by the liquid on the block and the weight of the block exerted on the liquid.

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The instruments used to determine the speed of the object are a speedometer and a tachometer.

A speedometer, an instrument that indicates the speed of a vehicle/object, is usually combined with a device called an odometer that records the distance traveled. Gear motion produces a current that is directly proportional to the speed of rotation of the gear. A computer chip processes the current and converts it into a number corresponding to the speed of travel (miles or kilometers per hour).

A speedometer is a counting device. Used to indicate the revolutions per minute (RPM) of an aircraft engine. This instrument has a typical measurement accuracy of ±0.5% and is widely used as an automobile speedometer and aircraft engine speedometer.

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Option(B) can not represent velocity since the resultant velocity in that case is zero

The term motion refer to the change in the position of a body with time. The velocity of a body refers to the change in the position of a body as a function of time in a specified direction.

Since velocity takes direction into account, it follows that option(B) can not represent velocity since the resultant velocity in that case is zero as the body returns to its starting point.

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Answer:

1200

Explanation:

Temperature and energy ➡️ Surface temperature and ocean temperature

Atmospheric composition ➡️ Carbon-dioxide and other greenhouse gases

Ocean and water ➡️ Ocean acidification and sea level

Cryosphere ➡️ Sea ice and galciers

Here are the answers

Answer:

B Raise the object farther off the ground

The average velocity of the car would be equal to its constant velocity, which is equal to the speed of the car. In other words, the average velocity of the car would be equal to the distance traveled by the car divided by the time taken to travel that distance, in the same direction as the motion of the car.

If a car is moving on a straight road at a constant speed in a single direction, then the average velocity of the car would be equal to its constant velocity. Velocity is a vector quantity that includes both the magnitude and direction of an object's motion. When an object moves at a constant speed in a straight line, its velocity remains constant, since there is no change in direction or speed.

The average velocity of an object is defined as the total displacement of the object divided by the total time taken. In the case of a car moving at a constant speed in a straight line, the displacement of the car over any time interval would be equal to the distance traveled in that time interval in the same direction. Since the car is moving in a straight line at a constant speed, the distance traveled and the displacement of the car would be the same.

Therefore, the average velocity of the car would be equal to its constant velocity, which is equal to the speed of the car. In other words, the average velocity of the car would be equal to the distance traveled by the car divided by the time taken to travel that distance, in the same direction as the motion of the car.

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Metal elements are most likely found on the left side of the periodic table. Details about periodic table can be found below.

Periodic table is a tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group or column.

Metallic elements are one of the group of elements found on the periodic table and they include the following:

Metallic elements are located on the left hand side of the periodic table.

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Answer: (A) Along the stairstep line

Explanation:

Answer: Yes, it can be  possible that an object have non zero angular momentum.

Explanation:

There is a concept of frame of reference.

When your frame of reference is not on that straight line where the object is moving then the object will have non zero angular momentum .

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In nerves, when the membrane potential drops from -70 mV to -55 mV, cells generate action potentials and propagate down the axons. Action potentials are propagated with the same shape and size along the length of the axon or muscle cell.

For a given cation, at membrane potentials that are negative compared to the equilibrium potential, ions flow into the cell, and at membrane potentials that are more positive than the equilibrium potential, the current carried by the particular ion flows out of the cell. Hyperpolarization is when the membrane potential at a particular location on the membrane of a neuron becomes more negative, and depolarization is when the membrane potential becomes less negative (more positive). 

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The gravitational force from the sun controls the orbit of the moon and the planet besides gravity.

Anything in the universe if has mass, then it is tends to have some gravitational interaction with other objects having some mass.

The moon and the planet interact with each other due to the gravity of the planet. Beside this gravity, one more force that is responsible is the gravitational force due to the sun.

The gravitational force of the sun makes the earth rotate around the sun, and it indeed result in the rotation of the moon around the planet.

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Answer:

90.8%

Explanation:

efficiency = output / input

Simply just put in what we know.

386/425 = 0.908 (Rounded too 3 s.f)

And if you want this in percentage, you simply x100 your answer. Hence the answer being 90.8%

Answer:

What question?

Explanation:

False. The Jovian planets, also known as gas giants, are Jupiter, Saturn, Uranus, and Neptune and are not much denser than Earth.

Although they have greater masses than Earth, their densities are lower due to their composition. Jovian planets are primarily composed of light elements, such as hydrogen and helium, which are less dense than the rocky and metallic materials found in terrestrial planets like Earth.

Jupiter and Saturn are mostly hydrogen and helium, while Uranus and Neptune have a higher proportion of heavier elements like water, ammonia, and methane. Due to this composition, the Jovian planets have lower average densities compared to Earth. For example, Earth has a density of 5.52 g/cm³, whereas Jupiter, the largest Jovian planet, has a density of only 1.33 g/cm³.

Thus, it is false to say that all four Jovian worlds are much denser than Earth. Despite their great masses, they have lower densities because they are composed mainly of lighter elements, unlike the heavier elements found in Earth's composition.

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Answer:

13.4225 g/cm³

Explanation:

Given that:

Linear expansivity α = 2 * 10^-5

Change in temperature dt = t2 - t1 = (150 - 25)°c = 125°c

Initial density (d1) = 13

New density d2 =?

Using the relation :

α = (d2 - d1) / d1 * dt

d2 - d1 = d1 * dt * α

d2 = d1 + d1*dt*α

d2 = d1(1 + d1*dt*α)

d2 = 13( 1 + (13*125*2*10^-5))

d2 = 13(1 + 0.0325)

d2 = 13(1.0325)

d2 = 13.4225

d2 = 13.4225 g/cm³

Answer:

B - a simple circuit with one bulb and two batteries.

The circuit that would glow brightest is b - A simple circuit with one bulb and two batteries

This is the path for transmitting current. It usually consists of an electrical energy source and an electrical load.

In any circuit, the electrical power available is determined by the number of batteries available (energy source) and thus the current.

Since we know according to Ohm's law V = iR where

So, making i subject of the formula, we have i = V/R .

So, i ∝ 1/R this shows that the current is inversely proportional to the load.

So, the circuit that would glow brightest is b - A simple circuit with one bulb and two batteries

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