why is it necessary to let the entire apparatus cool

Answer:

12.5

Explanation:

the formula v⁰y=usin∅

therefore substitution of the values

v⁰y= 22sin(35) = 12.5

The combination of higher mass and lower elasticity in a bowling ball results in a more painful experience when compared to kicking a soccer ball.

Kicking a bowling ball is more painful than kicking a soccer ball because of the differences in their masses and elasticity. The pain experienced when kicking an object is determined by the transfer of kinetic energy and the interaction between the object and the body.

A bowling ball is much heavier and has a higher mass compared to a soccer ball. When you kick a bowling ball, it has a greater amount of momentum, which is the product of mass and velocity. The higher momentum results in a greater force being exerted on your foot upon impact, leading to a higher level of discomfort or pain.

In addition, the elasticity of the objects plays a role. Soccer balls are designed to be more elastic, allowing them to absorb and distribute the impact force more effectively. This elasticity helps to reduce the amount of force transmitted back to your foot, resulting in less pain. On the other hand, bowling balls are typically less elastic, leading to a greater transfer of force and more discomfort when kicked.

Overall, the combination of higher mass and lower elasticity in a bowling ball results in a more painful experience when compared to kicking a soccer ball.

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Answer: A

Explanation:

Answer:

High water level during a tide is called High tide.

Low water level during a tide is called Low tide.

Answer:

d

Explanation:

mass and weight do not effect how fast a object falls

Motion is relative, which means it can only be described in relation to another object.

Motion can be defined as the change in position of an object with respect to its surroundings in a given interval of time.

Based on the relativity principle, motion is relative, which means it can only be described in relation to another object.

The motion of every object is described with respect to another object which is often considered as the frame of reference.

Thus, the motion of an object is always relative, in the sense that is measured with respect to another object which can be stationary or in motion as well.

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The distance of the image from the converging lens is 4 cm. The image formed is real.

Distance of object from the converging lens, u = -6 cm

Focal length of the converging lens, f = 12 cm

A lens that generates a real image by converting parallel light beams to convergent light rays is known as the converging lens. The optical centre or axis of a converging lens serves as the focal point for light.

Applying lens formula,

1/u + 1/v = 1/f

1/v = 1/f - 1/u

1/v = (1/12) - (1/-6)

1/v = (1/12) + 1/6

1/v = 18/72

Therefore, the distance of the image from the converging lens is,

v = 72/18

v = 4 cm

The image is real and so long as the object is not in the center of the lens.

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The pressure exerted on the record by the phonograph needle is approximately 970,367.48 pascals.

To calculate the pressure exerted on the record, we can use the formula:

Pressure = Force / Area

First, we need to calculate the force exerted by the needle. We know that the equivalent of 0.95 g is supported by the needle, so we can use the formula:

Force = mass x gravity

where mass is in kilograms and gravity is approximately 9.81 m/s². Converting 0.95 g to kilograms, we get:

0.95 g = 0.00095 kg

Therefore, the force exerted by the needle is:

Force = 0.00095 kg x 9.81 m/s² = 0.0093395 N

Next, we need to calculate the area of the needle tip. Since the tip of the needle is a circle, we can use the formula:

Area = π x radius²

where π is approximately 3.14. Substituting the values we have, we get:

Area = 3.14 x (0.175 mm)² = 0.00961925 mm²

However, we need to convert this to square meters to use in the pressure formula. Since 1 mm² = 10⁻⁶ m², we get:

Area = 0.00961925 mm² x (10⁻⁶ m²/mm²) = 9.61925 x 10⁻⁹ m²

Now we can substitute the values we have into the pressure formula:

Pressure = Force / Area = 0.0093395 N / 9.61925 x 10⁻⁹ m²

Simplifying, we get:

Pressure = 970,367.48 Pa

Therefore, the pressure exerted on the record by the phonograph needle is approximately 970,367.48 pascals.

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Answer:

it's answer is Compound chemical energy

hope it helps you

Answer:

Some states have greater access to forestry programs than others.

Explanation:

Answer:

MOSE

Explanation:

Answer:

(1) Every object moves in a straight line unless acted upon by a force. There is no change in the state of motion unless there is an unbalanced force acting on it

(2) The acceleration of an object is directly proportional to the net force exerted and inversely proportional to the object's mass.

F=m*a

(3) Every action has an equal and opposite reaction.

The aforementioned circumstances can result in the production of 0.119 moles of ammonia (NH3).

We must utilize the ideal gas law and the stoichiometry of the balanced chemical equation for the reaction between hydrogen (H2) and nitrogen (N2) to make ammonia in order to determine how many moles of ammonia (NH3) were produced.

Let's begin by formulating the reaction's balanced equation:

3H₂ + N₂ → 2NH₃

We can see from the equation that we produce 2 moles of ammonia for every 3 moles of hydrogen. As a result, the molar ratio of ammonia to hydrogen is 2:3.

We must convert the supplied parameters of 4.0 liters of hydrogen at 50.0 °C and 1.2 atm of pressure into moles in order to use the ideal gas law. The ideal gas law and the molar volume of an ideal gas at standard temperature and pressure (STP) may be combined using the equation shown below:

PV = nRT

Where:

The temperature must first be converted from Celsius to Kelvin:

T(K) = T(°C) + 273.15

T(K) = 50.0°C + 273.15 = 323.15 K

To solve for the number of moles (n), we may now rearrange the ideal gas law equation as follows:

n = PV / RT

n = (1.2 atm) * (4.0 L) / (0.0821 L·atm/(mol·K) * 323.15 K) ≈ 0.179 mol

Since ammonia and hydrogen have a 2:3 molar ratio, we can calculate the amount of ammonia created by multiplying (2/3) * 0.179 mol by 0.119 mol.

As a result, the circumstances allow for the production of 0.119 moles of ammonia.

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The number of extra electrons needed to generate a charge q depends on the charge on a single electron, which is approximately -1.602 x 10^-19 Coulombs. To determine the number of extra electrons needed, you can use the formula:

n = q / (-e)

where n is the number of extra electrons, q is the total charge in Coulombs, and e is the charge on a single electron. The negative sign in the formula indicates that electrons have a negative charge.

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Answer:

Any electrical or electronic device known as a voltage regulator keeps the voltage of a power source within allowable ranges. The voltage regulator is required to maintain voltages within the permitted range that the electrical equipment employing that voltage can tolerate. A device like this is frequently used in motor vehicles of all types to adjust the generator's output voltage to the electrical load and the battery's charging requirements. When there are too many voltage changes in electronic equipment, voltage regulators are also used.

The regulator should be connected properly as reverse polarity destroys the regulator almost instantly.

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ANSWER

False.

EXPLANATION

In radioactive decay (or nuclei decay), an unstable nucleus emits radiation into a nucleus that is table and has less energy and a lower mass.

Therefore, nuclei decay from a less stable form to a more stable form.

The answer is false.

We can use the equation for the distance of a point from the origin in Cartesian coordinates to find the radius of the circle answer to question 35 is (b), the speed of the particle is always equal to 15 m/s.

Radius is a term used in geometry to describe the distance between the center of a circle or sphere and any point on its circumference or surface, respectively.For a circle, the radius is the length of a line segment that extends from the center of the circle to any point on its circumference. The radius is typically denoted by the letter "r". The radius of a circle is half of its diameter, which is the distance across the circle through its center.For a sphere, the radius is the length of a line segment that extends from the center of the sphere to any point on its surface. The radius is typically denoted by the letter "r". The radius of a sphere is half of its diameter, which is the distance across the sphere through its center.

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Part A. We are given that rock is thrown straight upwards from a bridge with an initial velocity of +35 m/s. To determine the velocity after 2 seconds we will use the following equation of motion for the velocity of a body in free fall:

Where:

Now, we plug in the values:

Now, we solve the operations:

Therefore, the velocity after 2 seconds is 15.4 m/s.

Part B. To determine the displacement we will use the following formula:

Now, we substitute the values:

Solving the operations:

Therefore, the displacement is 50.4 meters.

Answer:

Im not sure and someone should double check me

Explanation:

The two pound ball because it's heavier and gravity would pull it down faster

If a 2 pound ball and a 1 pound ball were dropped from the same height at the same time, both of them will fall in same time due to acceleration of free fall is same for both of them.

Any motion of a body in which gravity is the only force acting on it is referred to as free fall in Newtonian physics. A body in free fall has no force acting on it according to general relativity, where gravitation is reduced to a space-time curvature.

An object may not necessarily be falling down in the traditional sense of the word while it is in a "free fall" in a technical sense.

As  acceleration of free fall is same for both of them, when a 2 pound ball and a 1 pound ball were dropped from the same height at the same time, both of them will fall in same time.

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Answer:

A 2.5 g bullet traveling at 350 m/s hits a tree and slows uniformly to a stop while penetrating a distance of 12 cm into the tree's trunk. What is the initial kinetic energy of the bullet? 153.125 J Correct: Your answer is correct.Jan 8, 2020

Explanation:

Answer:

\(125\:\mathrm{minutes\: or\: }2.08\bar{3}\: \mathrm{hours}\)

Explanation:

Speed is given by \(s=\frac{d}{t}\), where \(d\) is distance travelled and \(t\) is time. Rearranging this equation, we have \(t=\frac{d}{s}\).

Plugging in our given information:

\(t=\frac{d}{s}=\frac{1500\:\mathrm{km}}{720\:\mathrm{km/h}}=2.08\bar{3}\: \mathrm{hours}\)

Thus, our answer is:

\(2.08\bar{3}\: \mathrm{hours}\cdot \frac{60\:\mathrm{minutes}}{1\:\mathrm{hour}}=\fbox{$125\:\mathrm{minutes}$}\)

Answer:

Explanation:

Power = Energy/time

-Don't have energy so I'm gonna solve for it

Gravitational Potential Energy = mass x gravity x height

= 60 kg x 9.8 m/s2 x 5m

= 2940 J

Power = Energy/time

=2940 J/10 s

= 294 W

the wave has a speed of 12 m/s.

Explanation:

Speed is directly proportional to wavelength and frequency. The wave has a frequency of 4 Hz. One Hertz (Hz) is equal to one cycle per second. The image shows that the wave has a wavelength of 3 m. Using the given speed and frequency, the wavelength can be calculated as shown below.

speed= wave length x frequency

speed = 3m x 4Hz

speed = 12m m/6

If the coefficient of static friction is 0.3, then the minimum force required to get it moving is equal in magnitude to the maximum static friction that can hold the body in place.

By Newton's second law,

• the net vertical force is 0, since the body doesn't move up or down, and in particular

∑ F = n - mg = n - 50 N = 0   ==>   n = 50 N

where n is the magnitude of the normal force; and

• the net horizontal force is also 0, since static friction keeps the body from moving, with

∑ F = F' - f = F' - µn = F' - 0.3 (50 N) = 0   ==>   F' = 15 N

where F' is the magnitude of the applied force, f is the magnitude of static friction, and µ is the friction coefficient.

Answer:

I believe it might be point A since the question ask what will result in the ln a largest increase in potential energy

Explanation:

point A since the question ask what will result in the ln a largest increase in potential energy

The energy can be defined as  ability to work or produce action and / or movement and manifests itself in many different ways, such as body movement, heat, electricity, etc.

The different types of energy include Kinetic energy which is associated with the movement of bodies. Potential energy which is  stored by virtue of a body's position relative to its surface is also called gravitational potential energy.

Thermal Energy or Heat can be defined as the energy  associated with the kinetic energy of the molecules that make up an element, it can be manifested if there is a temperature difference between two bodies.

Chemical energy released or formed from chemical reactions, Solar energy from sunlight. This form of energy is used to generate electricity through photovoltaic plates, for example.

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Distance traveled up the slope by the disk: 0.190 meters. Distance traveled up the slope by the ring: 0.196 meters.

To solve this problem, we can use the principles of conservation of energy and rotational kinetic energy.

Given:

Mass of the disk (m_disk) = 750 g = 0.75 kg

Mass of the ring (m_ring) = 760 g = 0.76 kg

Diameter of both disk and ring (d) = 15 cm = 0.15 m

Initial velocity (v) = 1.7 m/s

Angle of the slope (θ) = 13°

Part A:

For the disk:

The moment of inertia of a disk about its center is given by I_disk = (1/2) * m_disk * (r_disk)^2,

where r_disk is the radius of the disk. Since the diameter is given, we can calculate the radius as r_disk = d/2.

For the disk, the total kinetic energy (KE_disk) is the sum of translational and rotational kinetic energy:

KE_disk = (1/2) * m_disk * v^2 + (1/2) * I_disk * ω^2,

where ω is the angular velocity.

For rolling without slipping, the linear velocity is related to the angular velocity by v = ω * r_disk.

At the highest point of the slope, the disk will momentarily stop before rolling back down. At this point, the kinetic energy is converted into potential energy.

Setting KE_disk = 0.75 * 9.8 * h_disk, where h_disk is the height the disk travels up the slope, we can solve for h_disk.

Part B:

For the ring:

The moment of inertia of a thin ring about its center is given by I_ring = m_ring * (r_ring)^2,

where r_ring is the radius of the ring.

Using similar calculations as in Part A, the total kinetic energy (KE_ring) is given by:

KE_ring = (1/2) * m_ring * v^2 + (1/2) * I_ring * ω^2.

At the highest point of the slope, the ring will momentarily stop before rolling back down. Again, the kinetic energy is converted into potential energy.

Setting KE_ring = 0.76 * 9.8 * h_ring, where h_ring is the height the ring travels up the slope, we can solve for h_ring.

Let's calculate the values for both parts:

Part A:

r_disk = 0.15/2 = 0.075 m

I_disk = (1/2) * 0.75 * (0.075)^2 ≈ 0.00202 kg·m^2

KE_disk = (1/2) * 0.75 * 1.7^2 + (1/2) * 0.00202 * ω^2

Setting KE_disk = 0.75 * 9.8 * h_disk, we can solve for h_disk.

Part B:

r_ring = 0.15/2 = 0.075 m

I_ring = 0.76 * (0.075)^2 ≈ 0.00317 kg·m^2

KE_ring = (1/2) * 0.76 * 1.7^2 + (1/2) * 0.00317 * ω^2

Setting KE_ring = 0.76 * 9.8 * h_ring, we can solve for h_ring.

By solving the equations and plugging in the values, we can find the respective heights traveled by the disk and the ring up the slope.

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