velma passes mort at a high speed. each holds a meter stick, oriented perpendicular to the direction of relative motion. mort observes that

Answer:

acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.

SI unit: m/s2, m·s−2, m s−2

Answer:

no

Explanation:

Answer:

C

Explanation:

To produce one molecule of glucose via the Calvin cycle, three molecules of CO2, nine molecules of ATP, and six molecules of NADPH are required.

The Calvin cycle is a series of biochemical reactions that occur in the chloroplasts of plants, and it is responsible for converting atmospheric \(CO_2\) into glucose. During the Calvin cycle, energy from ATP and NADPH is used to power a series of enzyme-catalyzed reactions that convert \(CO_2\) into glucose. This process is critical for the survival of plants, as glucose is a source of energy and a building block for many biomolecules. The Calvin cycle is a process used by plants to convert carbon dioxide into glucose, a simple sugar used for energy and growth.

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Answer:

Hey, the answer is Zirconium-93

Explanation:

Im very positive about this question, so i hope I helped you ;p

Answer:

Zirconium-93

Explanation:

when we add up the 40 protons and 53 neutrons it gives 93 and a protons and neutron 93 gives a Zirconium-93

Thanks theres your answer

The force exerted by the radiation on the surface can be found using the formula F = P/c, where c is the speed of light in m/s. In this specific case, the force is approximately 3.3 x 10^-10 N.

To calculate the force of the radiation on the surface, we first need to find the total power (P) that falls on the surface. Power is the rate at which energy is transferred, and is given by the formula:

P = I x A

where I is the intensity of the light in watts per square meter (W/m2) and A is the area of the surface in square meters (m2).

In this case, the intensity is given as 1 kW/m2, or 1000 W/m2 (since 1 kW = 1000 W). The area is given as 1 cm2, or 0.0001 m2 (since 1 m2 = 10,000 cm2).

So, we have:

P = I x A = 1000 W/m2 x 0.0001 m2 = 0.1 W

Next, we need to find the force (F) exerted by the radiation on the surface. This can be done using the formula:

F = P/c

where c is the speed of light, which is approximately 3 x 108 meters per second (m/s).

Substituting the values we have:

F = P/c = 0.1 W / 3 x 108 m/s = 3.3 x 10^-10 N

Therefore, the force of the radiation on the surface is approximately 3.3 x 10^-10 N.

In summary, the long answer is that the force of the radiation on the surface is found by first calculating the total power that falls on the surface using the formula P = I x A, where I is the intensity of the light in W/m2 and A is the area of the surface in m2. Next, the force exerted by the radiation on the surface can be found using the formula F = P/c, where c is the speed of light in m/s. In this specific case, the force is approximately 3.3 x 10^-10 N.

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Answer:

The answer is D.

Explanation:

You have to apply distance formula :

\(distance = speed \times time\)

\(let \: d = 200,t = 4\)

\(200 = s \times 4\)

\(4s = 200\)

\(s = 200 \div 4\)

\(s = 50 \: m {s}^{ - 1} \)

An eagle travels 200 meters in 4 seconds

Speed of the eagle

Distance=d=200m

Time=t=4s

\({\boxed{\sf Speed ={\dfrac{Distance{}_{(d)}}{Time{}_{(t)}}}}}\)

\(\qquad\quad {:}\longmapsto\sf Speed=\dfrac {200}{4}\)

\(\qquad\quad {:}\longmapsto\sf Speed=50m/s \)

\(\therefore{\underline{\boxed{\bf Speed\:of\:eagle=50m/s}}}\)

(a) The divergence angle of the Gaussian beam can be calculated using the formula θ = λ / (π * w0). (b) To decrease the beam spread from a 40° cone angle to a 10° cone angle, a lens system needs to be designed. (c) The Numerical Aperture (NA) of the receiver can be calculated using the formula NA = n * sin(θ).

(a) The divergence angle of the Gaussian beam can be calculated using the formula θ = λ / (π * w0), where λ is the wavelength and w0 is the spot size. Given that the spot size is 1 mm (or 0.001 m) and the wavelength is 0.82 µm (or 8.2 x 10^-7 m), we can substitute these values into the formula to find the divergence angle. The divergence angle is approximately 0.105 radians.

To calculate the spot size at 5 km, we can use the formula w = w0 + θ * z, where w0 is the initial spot size, θ is the divergence angle, and z is the propagation distance. Plugging in the values w0 = 1 mm, θ = 0.105 radians, and z = 5 km (or 5000 m), we can calculate the spot size at 5 km. The spot size at 5 km is approximately 1.525 mm.

(b) To decrease the beam spread from a 40° cone angle to a 10° cone angle, a lens system needs to be designed. Given that the source is a square planar radiator measuring 20 µm on a side, the initial beam spread corresponds to a cone with a full-cone angle of 40°. To decrease the cone angle to 10°, a lens system can be used to focus and collimate the light beam.

The specific design of the lens system depends on the requirements and constraints of the system. However, in general, a combination of lenses, such as converging and diverging lenses, can be used to manipulate the light beam. By properly selecting and arranging the lenses, the beam spread can be reduced to the desired 10° cone angle. The image size and position will vary depending on the specific lens system design.

(c) The Numerical Aperture (NA) of the receiver can be calculated using the formula NA = n * sin(θ), where n is the refractive index of the medium and θ is the half-angle subtended by the receiver's photodetector. In this case, the receiver has a 10-cm focal length and a 1-cm photodetector diameter, which corresponds to a half-angle of θ = arctan(0.5/10) ≈ 2.86°.

Given that there is an inserted medium with a refractive index of n = 1.5 between the lens and detector, we can substitute these values into the NA formula. The Numerical Aperture of the receiver is approximately NA = 1.5 * sin(2.86°) ≈ 0.076.

The material dispersion (M) of a laser diode for a given wavelength can be calculated using the formula M = (dλ / λ), where dλ is the change in wavelength and λ is the original wavelength. However, in the provided question, the value for the change in wavelength (dλ) is not given, so it's not possible to calculate the material dispersion of the laser diode.

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Answer:

Explanation:

Kinetic energy involves motion so something that is not moving has zero kinetic energy.

Potential energy does not involve motion and is based on position in a field like gravity and magnetic.

Answer:

8.89 m/s

Explanation:

rate = distance/time

40m/4.5 sec = 8.8888889 m/s

Answer:

The position variable gives location relative to an origin.

Explanation:

Position (displacement) gives location relative to an origin, but distance does not.

The imaginary, huge, apparently moving sphere on which the stars appear to be mounted is called the celestial sphere.

The celestial sphere is a concept used in astronomy to represent the appearance of the stars as if they are fixed on a gigantic sphere surrounding the Earth. It is a helpful tool for astronomers to study the positions and movements of celestial objects, such as stars, planets, and galaxies.

Although the celestial sphere is an imaginary construct, it provides a convenient reference frame for locating and observing celestial objects. It allows astronomers to measure the positions of stars and track their apparent motion across the sky. By using coordinates on the celestial sphere, such as declination and right ascension, astronomers can precisely describe the location of a celestial object.

One important thing to note is that the celestial sphere is not a physical object but rather a way of visualizing the sky. It is an imaginary projection of the Earth's equator and celestial poles onto the sky. The celestial equator is a projection of the Earth's equator onto the celestial sphere, while the celestial poles are projections of the Earth's North and South Poles.

To summarize, the celestial sphere is an imaginary, huge, apparently moving sphere on which the stars appear to be mounted. It helps astronomers study and understand the positions and movements of celestial objects.

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Answer:

Area under velocity-time graph gives the displacement of a moving object whereas slope of velocity-time graph gives the acceleration.

Explanation:

Answer:

Explanation:

Newton's Third Law states that "every action has an equal and opposite reaction". In a rocket, burning fuel creates a push on the front of the rocket pushing it forward. This creates an equal and opposite push on the exhaust gas backwards.

If two systems are in thermal equilibrium there will not be a net flow of energy from one system to other systems. So option a) is the right answer.

When there is no net transfer of heat energy between two physical systems connected to one another and both systems are operating at the same temperature, the systems are said to be in thermal equilibrium.

Two types of thermal equilibrium exist internal thermal equilibrium and thermal equilibrium between two thermally linked bodies.

If two bodies are thermally connected to one another, only heat will be transferred in order to maintain equilibrium matter and mass won't be moved.

Additionally, a body that is isolated from other bodies maintains its internal thermal balance since neither the outside nor the interior of the body can transfer heat.

The zeroth law of thermodynamics, which states that two bodies are in thermal equilibrium with one other if they are each in thermal equilibrium with a third body, is followed by thermal equilibrium.

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The minimum mass required for a neutron star to maintain material on its surface during rapid rotation is determined by balancing the centrifugal force with the gravitational force.

The centrifugal force is given by:

F_c = m r ω^2

where m is the mass of the material, r is the radius of the neutron star, and ω is the angular velocity.

The gravitational force is given by:

F_g = G m M / r^2

where G is the gravitational constant, M is the mass of the neutron star, and r is the radius.

For the material to remain on the surface, the centrifugal force must be equal to or less than the gravitational force, so we can set up the following inequality:

m r ω^2 ≤ G m M / r^2

Simplifying and solving for M, we get:

M ≥ (r ω)^2 / (G)

Substituting the given values, we get:

M ≥ (20 km * 1 rev/s)^2 / (6.6743 x 10^-11 N m^2/kg^2)

M ≥ 2.98 x 10^30 kg

Therefore, the minimum mass required for a neutron star with a radius of 20 km and a rotation rate of 1 rev/s to maintain material on its surface is approximately 2.98 x 10^30 kg.

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Scientists have observational evidence of black holes through indirect methods, such as studying the effects of their strong gravitational pull on surrounding matter, detecting X-rays emitted from accretion disks.

Black holes, by definition, cannot be observed directly since no light or information can escape their gravitational pull. However, scientists have gathered compelling evidence for their existence through indirect observations. One such method involves studying the effects of black holes on surrounding matter. As matter falls into a black hole's gravitational field, it forms an accretion disk that emits X-rays detectable by space telescopes. Additionally, the detection of gravitational waves, ripples in spacetime caused by the acceleration of massive objects, provides strong evidence for the existence of black holes. Advanced detectors like LIGO and Virgo have successfully observed gravitational waves generated by black hole mergers, confirming their presence in the universe.

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The charge of the particle in this situation is positive. When a charged particle is immersed in a uniform magnetic field, it experiences a force known as the Lorentz force, which is given by the equation:

F = q(v × B)

Where F is the Lorentz force, q is the charge of the particle, v is the velocity of the particle, and B is the magnetic field.

In this case, the particle is moving along a circular path in the counter-clockwise direction, which means that the force acting on the particle is directed towards the center of the circle. This force is known as the centripetal force, and it is given by the equation:

F = mv^2/r

Where m is the mass of the particle, v is the velocity of the particle, and r is the radius of the circle.

Since the Lorentz force and the centripetal force are equal in magnitude and opposite in direction, we can equate the two equations to get:

q(v × B) = mv^2/r

Rearranging the equation and solving for q gives:

q = mv^2/(rB)

Since the particle is moving in the counter-clockwise direction, the velocity vector v is directed tangentially to the circle, and the magnetic field vector B is directed out of the page. The cross product of these two vectors is directed towards the center of the circle, which means that the charge of the particle must be positive in order for the Lorentz force to be directed towards the center of the circle.

Therefore, the charge of the particle in this situation is positive.

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Answer:

thermal pollution

Explanation:

took exam!

When the heat is discharged into the atmosphere then energy is changed into mechanical energy is known as Thermal pollution.

When Thermal pollution is the degradation of water differentia by any procedure that changes ambient water temperature.

A typical motivation for thermal pollution is the usefulness of water as a coolant by power plants and industrial manufacturers.

When the water utilized as a coolant is returned to the biological environment at a more elevated temperature, the sudden transformation in temperature lowers the oxygen supply and affects ecosystem composition.

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The total distance traveled by the in-line skater is 33.75 metres.

The total distance will be calculated by the sum of distance due to acceleration and distance due to constant speed. Converting the above mentioned formula in mathematical expression to be used:

d = (v+u/2)×t + v×t

Keep the values in formula to find the total distance.

d = (5+0/2)×4.5 + 5×4.5

Performing addition and multiplication on Right Hand Side of the equation

d = 2.5×4.5 + 22.5

Performing only multiplication on Right Hand Side of the equation

d = 11.25 + 22.5

Performing only addition on Right Hand Side of the equation

d = 33.75 metres

Thus, the skater traveled 33.75 metres.

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Answer:

because our some of the energy goes from our eyes

explanation;

There are several reasons why it's important to close our eyes while we sleep. Closed eyelids block light, which stimulates the brain to wakefulness. Closing our eyes also protects and lubricates the eyes while we sleep

Answer:

Given - M = 20 kg

k = 0.4

F = 200 N

To find - acceleration

Solution -

F= kMA

200 = 0.4 * 20 * acceleration

200 = 8 * a

a = 8/200

a = 0.04 m s²

Answer:

His first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. In other words its  inertia.

Explanation:

Newtons first law of motion states that"A body will continue to its state of rest or motion unless external force acted upon it.

The magnitude of the force that the object exerts on the child is 100 N.

option C is the correct answer.

Newton's third law of motion states that for every action there is an equal and opposite reaction. In other words, action and reaction are equal and opposite.

Mathematically, Newton's third is given as;

Fa = Fb

where;

If the child exerts 100 N force on the object, the reaction of the object or the upward force exerted on the child by the object is 100 N in opposite direction.

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Answer:

the answer is a. a ball is moving towards the camera faster then slower

The force responsible for the acceleration of the crate is the frictional force between the crate and the bed of the truck.

When the truck accelerates, the crate tends to remain at rest due to inertia. However, the frictional force between the crate and the bed of the truck acts in the forward direction, allowing the crate to accelerate along with the truck.

This frictional force is a result of the interaction between the surfaces of the crate and the truck bed. Without this frictional force, the crate would slide or move independently from the truck's acceleration.

The frictional force arises due to the microscopically rough surfaces of the crate and the truck bed. As the two surfaces are pressed against each other, intermolecular forces come into play, resulting in the generation of the frictional force

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its 13.98. it's simple multiplication 3* 4.66= 13.98