some solids exist in his regular structure known as a lattice true or false ​

Answer: 81 1/2 moons would be needed to equal the amount of mass of Earth

Explanation:

Answer:

D

Explanation:

The decrease in potential energy is equal to the increase in kinetic energy.

mgh

250 x 9.8 x 30

=73, 500

Answer:

73,500 J

Explanation:

100% Correct

The resistance of the wire in the 30-turn coil is calculated to be 0.284 ohms, given the change in magnetic flux, time, and induced current.

The problem involves calculating the resistance of the wire in a 30-turn coil based on the change in magnetic flux, time, and induced current. According to Faraday's law of electromagnetic induction, the magnitude of the induced electromotive force (EMF) in a coil is proportional to the rate of change of magnetic flux through the coil. Using the formula for EMF, the induced current in the coil can be calculated, which in turn can be used to calculate the resistance of the wire in the coil using Ohm's law. The resulting resistance value is 0.284 ohms. This calculation is important in designing and understanding the behavior of electrical circuits and devices that utilize coils and magnetic fields.

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The sieving would work best when really small pieces and fibers of paper are mixed in with sand and need to be removed.

When really small pieces and fibers of paper are mixed in with sand and need to be removed, the separation process that would probably work best is sieving.What is sieving?Sieving is a physical separation process that separates solid particles based on their particle size.

This process can be used to separate a variety of materials, including powders, grains, and solids.Sieving is the process of separating materials based on their size.

A sieve is a device that consists of a mesh or net that is used to separate larger particles from smaller particles. When a mixture of particles is poured onto a sieve, the smaller particles fall through the mesh, while the larger particles remain on top of the mesh.

This process is used to remove impurities from a mixture and to separate materials with different particle sizes.

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Ryley ran a longer distance than Owen on the same day, in order to determine who ran a longer distance on the same day, convert the distances to the same unit, either miles or yards.
1 mile = 1,760 yards

So,  1 mile = 1,760 yards

A mile (symbol: mi or m) is a unit of length in the imperial and US customary systems of measurement. It is currently defined as 5,280 feet, 1,760 yards, or exactly 1,609.344 meters.
Ryley ran 2 miles, so his distance in yards is:
2 miles * 1,760 yards/mile = 3,520 yards
Owen ran 2,000 yards.
Now we can compare:
Ryley: 3,520 yards
Owen: 2,000 yards
Ryley ran a longer distance than Owen on the same day.

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Answer:· Relationship between Energy Transferred, Current, Voltage and Time. The potential difference or voltage, V across two points is defined as the energy, E dissipated or transferred by a coulomb of charge, Q that moves through the two points. Therefore, potential difference, Current is the rate of charge flow.

Explanation:

Relationship between Time, Current, Voltage, and Transferred Energy The energy, E, dissipated or transferred by a coulomb of charge, Q, which passes through the two places, is described as the potential difference or voltage, V across two points.

An electric circuit, also known as an electrical circuit, is a conductor used to move current or electricity. To connect the source of power to the load, a conductive wire is utilized. Between the supply and the load, an ON/OFF switch and a fuse are also employed.

The rate of charge flow is therefore determined by potential difference and current.

A circuit is said to be open when an electrical line, electronic device, or switch is malfunctioning or when the switch is off. You can see in the diagram below that the bulb is not lighting because either the switch is turned off or an electrical line is faulty.

Therefore, Relationship between Time, Current, Voltage, and Transferred Energy The energy, E, dissipated or transferred by a coulomb of charge, Q, which passes through the two places, is described as the potential difference or voltage, V across two points.

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The Gaussian surfaces b and d have no electric flux through them. This means that the net electric flux passing through these surfaces is zero.

According to Gauss's law, the electric flux through a closed surface is proportional to the net charge enclosed by the surface. If there is no charge enclosed by a closed surface, then the net electric flux through that surface is zero.

Gaussian surfaces b and d do not enclose any charge, hence the net electric flux through these surfaces is zero. On the other hand, Gaussian surfaces a and c enclose positive and negative charges respectively, resulting in a net electric flux passing through them.

Therefore, the correct answer is b and d.

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Answer:B

Explanation:

.03 of an hr is 2 mins and if it takes 2 mins to drive 4 miles enter it in pace calulator you are going 120mph so the closest to 120 is 133mph

The kid is breaking the speed limit of 45 miles/hr since he is going at 133.3 miles/hr.

Speed is the ratio of distance travelled to time taken. It is given by:

Speed = distance / time

Since the distance to the mall is 4 miles, the time taken is 0.03 hours, hence the speed is:

Speed = distance / time

Speed = 4 miles / 0.03 hours

Speed = 133.3 miles/hr

Hence the kid is breaking the speed limit of 45 miles/hr since he is going at 133.3 miles/hr.

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The formula for frequency, denoted by the Greek letter nu (ν), is: ν = 1 / T

The formula for spring constant, denoted by the letter k, is: k = - (F / x)

Frequency and spring constant are two important concepts in physics that are related to the behavior of oscillating systems.

T is the period of oscillation, or the time it takes for one complete cycle of oscillation to occur.

F is the force applied to the spring, and x is the displacement of the spring from its equilibrium position. The spring constant is a measure of how difficult it is to stretch or compress the spring.

It's important to note that frequency and spring constant are inversely related, meaning that as one increases, the other decreases. For example, a spring with a larger spring constant will have a lower frequency of oscillation because it is harder to stretch or compress. Similarly, a system with a higher frequency of oscillation will have a smaller spring constant because it is easier to stretch or compress.

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Answer:

59.18 kg

Explanation:

use f=ma

f= 580 N

a = 9.8 m/s 2

weigh(m) doesn't change only force(F) changes

Answer: 219.6N

Explanation:

Find the mass of this person by dividing his weight by the accelleration. Remember, F=ma

580 = m*9.8

m = 59.18kg

Then multiply the mass by the new gravitational acceleration on Mars.

59.18*3.711 = 219.6N

After considering the given data we conclude that the linear acceleration of the edge of the rotor is 569 m/s².

The linear acceleration of the edge of the rotor can be evaluated applying  the formula:

a = rω²

Here,
a = linear acceleration,
r = radius of the rotor
ω = angular velocity.
It is known to us that the rotor radius is 7.165 cm and it spins at a constant 2695.0 rpm, we can alter rpm to rad/s as follows:
ω = (2π × 2695.0) / 60 = 282.6 rad/s
Staging these values in the formula above, we get:
a = (7.165 × 10⁻²) × (282.6)² = 569 m/s²
Hence, the linear acceleration of the edge of the rotor is 569 m/s².
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Answer:

600 kilometers.

Explanation:

Hope this helps!

Answer:

3/2 m/s^2

Explanation:

a= v-u\t

= 30-22/4

=6/4

=3/2 m\s^2

HOPE THIS WORKS..

The mercury content, CFLs (compact fluorescent lamps) contain a small amount of mercury, typically about 4-5 milligrams per bulb. The mercury is essential for the functioning of the bulb because it helps to create the ultraviolet light that activates the phosphors, which in turn produce visible light.

The mercury is tightly bound within the CFL and is not released unless the bulb is broken. In fact, a study by the US Department of Energy found that CFLs emit less mercury overall compared to incandescent bulbs, taking into account the amount of electricity needed to power them. On the other hand, incandescent bulbs do not contain any mercury, but the production and consumption of electricity needed to power them can result in mercury emissions. Coal-fired power plants are the largest source of mercury emissions in the United States, and when incandescent bulbs are used, more electricity is needed to produce the same amount of light as a CFL. Additionally, proper disposal of CFLs can further reduce the risk of mercury pollution. It's important to note that newer LED (light-emitting diode) bulbs have even lower mercury content and are even more energy-efficient than CFLs, making them a great choice for environmentally conscious consumers.

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As the charge is relocated because of that charge, the configuration of the field lines inside will alter. The induced surface charge outside the sphere is uniformly dispersed throughout the exterior surface.

Two point charges A and B are set at a specific distance apart with force F acting between them. They have charges of +Q and -Q, respectively. It is accurate to say that only stationary electric charges are subject to Coulomb's law. This is because, in the case of moving charges, a current exists, which produces a magnetic field, which in turn exerts force on moving charges; as a result, Coulomb's Force is no longer the only force to be taken into account. A charge distribution that has a value solely at one specific place is known as a point charge. A test charge is a point charge that is so little that it has no impact on the charge distribution you are testing.

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The magnitude of the acceleration of the robot is 1m/s^2 .

Given ,

A toy doll and a toy robot are standing on a frictionless surface facing each other .

The mass of the doll = 0.20kg

The mass of the robot = 0.30kg

Force applied by the robot on the doll = 0.30N

We know the force and mass of the robot , so from this we can calculate the acceleration by applying Newton's laws of motion ,

Thus , F= ma

a = F/m = 0.30N / 0.30k

a = 1 m/s^2

Hence , the magnitude of the acceleration of the robot is 1m/s^2 .

Acceleration is the rate of change in velocity.

Positive acceleration it occurs when an object speeds up. Negative acceleration it occurs when an object slows down.

Acceleration is a change of velocity over a period of time, expressed by the equation,

A=Δv/t

The unit of acceleration is m/s^2.

The dimensional formula of acceleration is [M^0 L^1 T^-2] .

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Only it's volume changes. Volume is defined as the space an object takes up. The amount of substance, which is the mass stays the exact same. The amount of force that Earth is pulling the car down (the weight) stays the same.

When, a diver leaves the diving board 10.0m above water, at a velocity of 12.0m/s, 60 degree above the horizontal. If he takes 0.75 sec to complete a somersault. Then, the diver can complete 2 somersaults before hitting the water.

We can start by using the kinematic equations to find the time it takes for the diver to reach the water;

Vertical motion equation: y = y₀ + \(V_{0t}\) + 1/2 at²

where y = -10.0 m (taking upward direction as positive)

y₀ = 0

v₀ = 12.0 m/s sin(60°) = 10.4 m/s (taking upward direction as positive)

a = -9.81 m/s² (taking upward direction as positive)

Solving for t, we get; t = 1.50 s

Horizontal motion equation; x = x₀ + \(V_{0t}\) + 1/2 at²

where x = 0 (the diver starts from the diving board)

x₀ = 0

v₀ = 12.0 m/s cos(60°) = 6.00 m/s

a = 0 (assuming no horizontal acceleration)

Solving for t, we get: t = 0.00 s

The time it takes for the diver to complete a somersault is given as 0.75 s, so the number of somersaults the diver can complete before hitting the water is;

Number of somersaults = (time to reach water) / (time per somersault)

= 1.50 s / 0.75 s

= 2.00 somersaults

Therefore, the diver can complete 2 somersaults before hitting the water.

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Answer:

2.5705594546378 mol

Explanation:

Used this calculator

http://www.endmemo.com/chem/mmass.php

Answer:

Explanation:

Since we have no friction and we also have no angle of inclination, this is a straightfoward force problem, where

F = ma

Filling in,

F = (115)(7.8) so

F = 9.0 × 10¹ N

Answer:

KE=800,000

Explanation:

The formula for kinetic energy is KE=1/2mv^2 or Kinetic Energy= 0.5*mass*velocity^2

so 1000 is the mass and 40 is the velocity

KE=0.5*1000*40^2

KE=0.5*1,000*1,600

KE=800,000 Joules

Answer:

its c

Explanation:

D, invisible is not a way light can be transmitted.

Light can be transmitted through a medium such as air, water, glass, or a vacuum. When light is transmitted, it passes through the medium without being absorbed or reflected, allowing it to be seen on the other side of the medium. Transmission of light can occur in a straight line or can be refracted or diffracted, depending on the properties of the medium it is passing through.

Light can be absorbed by a material, which means that the energy of the light is transferred to the material. When this happens, the material may become excited, and the energy can cause a change in the material, such as heating it up, causing it to emit light, or causing a chemical reaction.

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Answer:

b: density decreases

e: volume increases

Explanation:

When the water changes to ice, there won't be a loss of water, so the mass will be the same. However the ice will occupy more space, so the volume will increase. Then, since density is the mass divided by the volume, if the volume increase and the mass stays the same, the density decreases.

So, the answers are:

b: density decreases

e: volume increases

Answer:

(a) RC time constant of the circuit is 6.9 × 10⁻⁶ ms

(b) The potential drop across the capacitor 1.00 s after the switch is closed is 0 V

Explanation:

The given parameters are

The length of the graphite pencil, L = 5.00 cm

The diameter of the graphite, D = 0.05 mm

The resistivity of the graphite, ρ = 1.38 × 10⁻⁵ Ω/m

The capacitance of the capacitor, C = 10.0 mF

The voltage of the power source, V = 0.50-V

(a) The RC time constant of the circuit, τ, is given as follows;

τ = R × C

Where;

R = The resistance of the graphite = L × ρ

C = The capacitance of the capacitor

∴ R = 5.00 cm × 1.38 × 10⁻⁵ Ω/m = 6.9 × 10⁻⁷ Ω

RC time constant of the circuit, τ = 6.9 × 10⁻⁷ Ω × 10.0 mF = 6.9 × 10⁻⁶ ms

RC time constant of the circuit, τ = 6.9 × 10⁻⁶ ms

(b) The potential drop after t = 1.00 s is given as follows;

\(i = \dfrac{V}{R} \cdot e^{-\dfrac{t}{R\cdot C} }\)

Where;

I = The current in the circuit

V = The voltage in the circuit = 0.50 V

R = resistance in the circuit = 6.9 × 10⁻⁷ Ω

C = The series capacitance = 10.0 mF

t = The time taken = 1.00 s

Plugging in the variable values, gives;

\(I = \dfrac{0.5}{6.9 \times 10^{-7}} \cdot e^{-\dfrac{1.00}{6.9 \times 10^{-7}\times 10.0 \ mF} } = 0\)

V(1) = I·R = 0 × R = 0

The potential drop across the capacitor 1.00 s after the switch is closed, V(1)  = 0 V

Answer :-

Explanation :-

As per the provided information in the given question, Force is given as 700 Newton. Pressure is given as 10 Pascal. And, we have been asked to calculate the Area.

For calculating the Area , we will use the Formula :-

\( \bigstar \: \: \: \boxed {\sf { \: Area \: = \: \dfrac {Force}{Pressure \: } }} \)

Therefore , by Substituting the given values in the above Formula :-

\( \Longrightarrow \: \: \: \sf {Area \: = \: \dfrac {Force}{Pressure}} \)

\( \Longrightarrow \: \: \: \sf {Area \: = \: \dfrac {700}{10}} \)

\( \Longrightarrow \: \: \: \bf {Area \: = \: 70} \)

Hence :-

\( \underline {\rule {180pt}{4pt}} \)

The final momentum of the skater is 3.77 m/s.

Momentum is the product of mass and acceleration. Recall that the principle of conservation of linear momentum states that total momentum before collision must equal the total momentum after collision.

Thus;

(50 Kg × 0 m/s) + (55Kg ×  7.2m/s) = (50 Kg + 55Kg) v

v =  (55Kg ×  7.2m/s)/(50 Kg + 55Kg)

v = 396/105

v = 3.77 m/s

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