Please help this question

Answer:

of which following tho?

Explanation:

Answer:

Velocity and frequency

Explanation:

Answer:

a. to the west.

Explanation:

An electron in a magnetic field always experience a force that tends to change its direction of motion through the magnetic field. According to Lorentz left hand rule (which is the opposite of Lorentz right hand rule for a positive charge), the left hand is used to represent the motion of an electron in a magnetic field. Hold out the left hand with the fingers held out parallel to the palm, and the thumb held at right angle to the other fingers. If the thumb represents the motion of the electron though the field, and the other fingers represent the direction of the field, then the palm will push in the direction of the force on the particle.

In this case, if we point the thumb (which shows the direction we shot the electron) to the south (towards your body), with the palm (shows the direction of the force) facing up to the roof, then the fingers (the direction of the field) will point west.

The wavelength of the wave shown in the image is approximately 0.0018 m.

we can see that there are two points marked as "A" on the string, which represents two consecutive peaks of the wave. The distance between these two points is 45 m.

The wavelength of a wave is the distance between two consecutive peaks or troughs of the wave. Therefore, in this case, the wavelength is simply the distance between the two points marked as "A".

Using the ruler provided in the image, we can measure the distance between the two points marked as "A" to be approximately 0.18 cm. However, this measurement is not in meters, which is the standard unit for measuring wavelength.

To convert the measurement to meters, we need to divide it by 100, since there are 100 centimeters in 1 meter. Therefore, the distance between the two points marked as "A" is:

0.18 cm ÷ 100 = 0.0018 m

So the wavelength of the wave shown in the image is approximately 0.0018 m.

learn more about wavelength here

https://brainly.com/question/10728818

#SPJ1

Answer:

(c) electron - they are found in the outer "shells" of atoms

Answer:

Salt

Explanation:

Salt plays a crucial role in maintaining human health. It is the main source of sodium and chloride ions in the human diet. Sodium is essential for the nerve and muscle function and is involved in the regulation of fluids in the body. Sodium also plays a role in the body's control of blood pressure and volume. Salt is harvested by seawater or brine is fed into large ponds of water and is drawn out through natural evaporation which allows the salt to be subsequently harvested.

Have a good day and stay safe!

Answer:

F = I L X B = I L B sin theta

F = 5.2 * 1.2 * .87 sin 45 = 3.84 N   in the direction of (L X B)

Note: L and B must be at right angles for   F = I L B

Based on the research data, the psychologist can be 99% confident that the interval from 1.07 to 2.94 includes the unknown population mean µ.

A confidence interval is a range of values within which a researcher can be fairly certain that the true value of the mean can be found.

The confidence Interval of the survey above is calculated using the formula:

\( x ± z( σ/√n)\)

where

From the data provided;

x = 2.0

σ = 5.1

n = 200

z = 2.576 for 99% confidence

Therefore, the confidence Interval is:

\( 2.0 ± 2.576( 5.1/√200)\)

Confidence interval = 2.0 ± 0.93.

Therefore, the psychologist can be 99% confident that the interval from 1.07 to 2.94 includes the unknown population mean µ.

Learn more about confidence interval at: https://brainly.com/question/25779324

The total displacement of the dispatch rider is calculated as 43km.

Data;

To calculate the total displacement of the dispatch rider, we can simply add up the total distance covered by the rider.

This becomes;

\(10+11+22 = 43km\)

The total displacement of the dispatch rider is calculated as 43km.

Learn more on displacement here;

https://brainly.com/question/13416288

https://brainly.com/question/1397750

An observer on the spacecraft would see the light beam moving away from the ship at the speed of light, while an observer on Mars would also see the light beam moving away from the ship at the speed of light. This is because the speed of light is always constant, regardless of the motion of the observer or the light source.

When the ball is hit from the deck of the yacht at 100 mph, it is moving at a speed relative to the yacht.

Since the yacht is moving at 20 mph, the ball would appear to be moving away from the yacht at 100 mph.

This is because the speed of the ball relative to the yacht is 100 mph, while the speed of the yacht relative to the ground is 20 mph.

Therefore, the total speed of the ball relative to the ground would be the sum of the speed of the yacht and the speed of the ball relative to the yacht, which is 120 mph (20 mph + 100 mph).

Now let's consider the Hermes spacecraft traveling at 0.1c past Mars and shining a laser from the front of the ship.

According to the theory of relativity, the speed of light is always the same for all observers, regardless of their motion or the motion of the light source.

So, regardless of the speed of the spacecraft, the light beam would travel away from the ship at the speed of light, c.

An observer on the spacecraft would see the light beam moving away from the ship at the speed of light, while an observer on Mars would also see the light beam moving away from the ship at the speed of light.

This is because the speed of light is always constant, regardless of the motion of the observer or the light source.

In summary, the theory of relativity tells us that the speed of light is always the same for all observers, regardless of their motion or the motion of the light source.

This means that the speed of light is a fundamental constant of the universe, and it plays a crucial role in our understanding of the laws of physics.

For more questions on light

https://brainly.com/question/11666011

#SPJ8

The force that acts on a projectile in the horizontal direction is Gravitational force.

A projectile is an object upon which the only force is gravity. Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.

Due to the absence of horizontal forces, a projectile remains in motion with a constant horizontal velocity. Horizontal forces are not required to keep a projectile moving horizontally. Hence, The only force acting upon a projectile is gravity.

To know more about gravitational force, refer:

https://brainly.com/question/29190673?referrer=searchResults

When scientists calculate the trajectory a satellite takes on its way to

study a planet, they use C. Speed, Velocity, and acceleration.

A trajectory, often known as a flight path, is the route taken by an object moving under the influence of gravity. Typically, the phrase is applied when referring to projectiles or satellites.  A parabola curve is usually a decent approximation of the trajectory form when an object is propelled for in a short distance.

When scientists calculate the trajectory a satellite takes on its way to

study a planet they take the speed, velocity, and acceleration into consideration.

The formula for calculating the trajectory can be expressed as:

\(\mathbf{y = h + xtan (\alpha) - \dfrac{gx^2 }{2V_o^2cos^2 (\alpha)}}\)

where;

Learn more about trajectory here:

https://brainly.com/question/88554?referrer=searchResults

The sliding filament theory explains how myosin and actin interact to cause a muscle contraction.  There are 5 stages: resting, excitement-contraction, contraction, recharge, and relaxation.

IF this helped please give Brainliest!!

1 The resting phase is before there is any tension in the muscle, pretty self explanatory.

2 The excitement-contraction phase occurs once the sarcoplasmic reticulum (SR) releases calcium, that binds to troponin, which causes tropomyosin to shift, allowing the myosin cross-bridge to attach to actin. The muscle force is determined by the number of cross bridges involved.  When there's an increase in the number of cross-bridges, myofibril and sarcoplasmic reticulum hypertrophy, which result in more actin + myosin and more fuel for the muscle respectively.  To increase the power generated in a contraction, there needs to be an increase in the speed of cross bridges.  Also make note: at this point, the muscle still hasn't quite contracted.

3 The contraction phase is where the power stroke occurs.  ATP undergoes hydrolysis via the enzyme myosin ATPase, and loses a phosphate to become ADP.  This allows the myosin head to change shape and pull on the actin, which is referred to as the power stroke.  Myosin pulling on actin causes the muscle fiber to shorten.

4 The recharge phase is when the contraction continues and can only occur when calcium, ATP, and myosin ATPase are all still available.

5 The relaxation phase occurs when nerve stimulation stops and those components are no longer available.  The calcium returns to the sarcoplasmic reticulum and myosin lets go of actin.

If the coefficient of kinetic friction between Josh's sled and the snow is 0.08, he slides 6.97 meter from the base of the hill.

To find how far from the base of the hill Josh's sled ends up, we need to first find the speed of the sled at the bottom of the hill using the conservation of energy principle,

mgh = (1/2)mv², plugging in the values given in the problem, we get,

m(9.81 m/s²)(3.5 m) = (1/2)mv²

Simplifying and solving for v, we get,

v = √(2gh)

v = √(2(9.81 m/s²)(3.5 m))

v = 8.29 m/s

Now we can use the kinematic equation,

d = vt - (1/2)at, to find how far the sled slides on the horizontal patch of snow before coming to a stop, where d is the distance traveled, v is the initial velocity (8.29 m/s), a is the acceleration due to friction (-μg), and t is the time it takes to come to a stop (which we can find by setting v = 0 and solving for t),

0 = 8.29 m/s - μg*t

t = 8.29 m/s / μg

Substituting this value of t back into the kinematic equation, we get,

d = (8.29)(8.29/μg) - (1/2)μg(8.29/μg)²

d = 6.97 m

Therefore, Josh's sled ends up 6.97 meters from the base of the hill.

To know more about energy conservation principle, visit,

https://brainly.com/question/24772394

#SPJ1

a) The angle θ1 which the righthand cable makes with respect to the ceiling is  sin^(-1)(692 N / 530 N).

b) The angle θ2 which the left-hand cable makes with respect to the ceiling is  sin^(-1)(692 N / 570 N).

We may utilise the tension of the right-hand cable as well as its vertical and horizontal components to determine the angle 1. θ2 = sin^(-1)(692 N / 570 N).

We may apply the ideas of trigonometry and vector addition to address this issue.

a) The tension of the right-hand wire as well as its vertical and horizontal components can be used to determine the angle 1.

T1sin(1) calculates the vertical component of the right-hand cable's tension, which is equal to the object's weight (692 N).

T1sin(θ1) = 692 N

We may rearrange the equation to find 1:

θ1 = sin^(-1)(692 N / T1)

We can find 1 by substituting the given tension value, T1 = 530 N:

θ1 = sin^(-1)(692 N / 530 N)

b) Similarly, we can use the formula to determine the angle 2 the left-hand cable's tension and its vertical and horizontal components.

The vertical component of the left-hand cable's tension is given by T2sin(θ2), and it should also be equal to the weight of the object (692 N).

T2sin(θ2) = 692 N

To find θ2, we can rearrange the equation:

θ2 = sin^(-1)(692 N / T2)

Substituting the given tension value T2 = 570 N, we can solve for θ2:

θ2 = sin^(-1)(692 N / 570 N)

Calculating these angles using the given tension values will provide the answers in degrees.

For more question on tension

https://brainly.com/question/24994188

#SPJ11

When you double the speed of your car, your braking distance quadruples. every time you double your speed, you multiply your braking distance by four.

The stopping distance of a vehicle is the sum of breaking distance and thinking distance. The stopping distance of a vehicle when we increase the velocity from 10mph to 30 mph, increases from30 feet to 90 feet.

Stopping distance is the distance covered by a vehicle when we stops. Distance is the product of time and velocity. As the velocity increases then, the time taken to cover the distance will be lower.

Stopping distance mathematically is the sum of breaking distance and thinking distance .Thinking distance is simply the speed and it is in fact means how long it takes on average to think for a break.

Breaking distance is means how long the driver takes to break or stop in actual. In general, the breaking distance is speed multiplied by 2.

Thus, for 10 mph, the thinking distance is 10 feet and breaking distance is 10 × 2 = 20 feet and therefore, the stopping distance is 10 + 20 =30 feet.

Similarly for 30 mph, breaking distance is 60 feet and thinking distance is 30 feet thus, having 60 + 30 = 90 feet of stopping distance.

Therefore, when the speed increased from 10 mph to 30 mph, stopping distance increases from 30 feet to 90 feet.

To find more about stopping distance, refer the link below:

https://brainly.com/question/22245904

#SPJ2

Answer:

Explanation:

a. The X and Y components of the velocity can be found using trigonometry:

X = V * cos(θ) = 15 m/s * cos(38°) ≈ 11.63 m/s

Y = V * sin(θ) = 15 m/s * sin(38°) ≈ 9.14 m/s

b. The time the ball is in the air can be found using the Y component of the velocity and the acceleration due to gravity:

Y = V * sin(θ) * t - (1/2) * g * t^2

where g = 9.8 m/s^2 is the acceleration due to gravity

Solving for t, we get:

t = 2 * Y / g ≈ 1.87 s

c. The distance the ball travels can be found using the X component of the velocity and the time in the air:

distance = X * time = 11.63 m/s * 1.87 s ≈ 21.78 m

Answer:

The vertical component of the velocity can be found using the formula:

V₀y = V₀ * sin(θ)

where V₀ is the initial velocity, θ is the angle of projection, and V₀y is the vertical component of the velocity.

Substituting the given values, we have:

V₀y = 48 * sin(53°)

Using a calculator, we can evaluate sin(53°) to be approximately 0.799:

V₀y = 48 * 0.799

V₀y ≈ 38.352

Therefore, the vertical component of the velocity with which the ball was launched is approximately 38 meters/second, which corresponds to option B.

Answer:

B.) 38 meters/second

Explanation:

The height of the image would be 9.64 cm.

We can use the thin lens equation to determine the position of the image:

1/f = 1/do - 1/di

where f is the focal length of the lens, do is the distance from the object to the lens, and di is the distance from the image to the lens. Rearranging this equation, we get:

1/di = 1/f - 1/d₀

Substituting the given values, we get:

1/di = 1/23 - 1/15

1/di = -0.007971

di = -125.3 cm

The negative sign for di indicates that the image is virtual (i.e., it appears on the same side of the lens as the object).

Now, we can use the magnification equation to determine the height of the image:

m = -di/d₀

where m is the magnification. Substituting the given values, we get:

m = -(-125.3 cm)/(15.0 cm)

m = 8.353

The negative sign for the magnification indicates that the image is inverted with respect to the object. The absolute value of the magnification tells us that the image is larger than the object by a factor of 8.353.

Therefore, the height of the image is:

hi = mho

hi = 8.3531.14 cm

hi = 9.64 cm

Rounding to three significant figures, the height of the image is 9.64 cm.

To know more about image

https://brainly.com/question/31319864

#SPJ1

Answer:

C. Its velocity is perpendicular to its acceleration

Explanation:

Because acceleration is always perpendicular to the velocity when the velocity will change direction without change it's magnitude

Complete question is;

A force stretches a wire by 0.60 mm. A second wire of the same material has the same cross section and twice the length.

a) How far will it be stretched by the same force?

b) A third wire of the same material has the same length and twice the diameter as the first. How far will it be stretched by the same force?

Answer:

0.15 mm

Explanation:

According to Hooke's Law,

E = Stress(σ)/Strain(ε)

Where E is youngs modulus

Formula for stress is;

Stress(σ) = Force(F)/Area(A)

Formula for strain is;

Strain(ε) = Change in length/original length = (Lf - Li)/Li

We are also told that a second wire of the same material has the same cross section and twice the length.

Thus;

Rearranging Hooke's Law to get the constants on one side, we have;

F/(AE) = ε

Thus from the conditions given;

ε1 = 0.6/Li

ε2 = (Change in length)/(2*Li)

And ε1 = ε2

Thus;

0.6/Li = Change in length/(2*Li)

Li will cancel out and we now have;

Change in length = 2 × 0.6 = 1.2 mm

Finally, we are told A third wire of the same material has the same length and twice the diameter as the first.

Area of a circle;A1 = πd²/4

Now, we are told d is doubled.

Thus, new area of the new circle is;

A2 = π(2d)²/4 = πd²

Rearranging Hooke's Law,we have;

F/A = εE

Since F and E are now constants, we have;

F/E = constant = Aε

Thus;

A1(ε1) = A2(ε2)

A1 = πd²/4

e1 = 0.60/Li

A2 = πd²

e2 = Change in length/Li

Thus;

((πd²/4) × 0.6)/Li = (πd² × Change in length)/ Li

Rearranging, Li and πd² will cancel out to give;

0.6/4 = Change in length

Change in length = 0.15 mm

Answer:

Cost, variability of generation, and lack of transmission

Explanation:

looked it up.might be wrong though.

The powder takes the shape of a magnetic field.

Powder morphology is connected to the shape and size of powder particles and is strongly dependent on the manufacturing methods. For example, mechanical alloying or mechanical milling leads to unevenly shaped powder particles, while gas dissipation leads to spherically shaped particles.

Atomized metal powder particles come in two basic particle shapes: those that are almost superbly round called spherical, and those that have lopsided, rounded shapes, called spheroidal.

So we can conclude that Powders are a group of particles of different sizes.

Learn more about powder here: https://brainly.com/question/20628766

#SPJ1

The viscosity of the oil with a torque 4Nm and a rotational speed is 30 rpm is 0.2003 N.s/m.

From the given,

torque = 4Nm

rotational speed = 30 rpm = (30 × 3.14)/60 = 3.14 rad/sec

radius = 0.15 m

thickness (h) = 0.003 m

To find linear velocity,

V = R×ω

  = 0.15×3.14

V =0.471 m/s

The dragging force,

F = 2μA(V/h)   (V is linear velocity and h is the thickness )

Area = area of cylinder = 2πRH, R is radius and H is the height of the cylinder.

F = 2μ(2πRH) (V/h)

  = 2μ(2×3.14×0.15×0.45) (0.471/0.003)

  = 133.10 μ   (μ is the viscosity of the oil)

F = 133.1μ

Torque (τ) = Force × radius

      4 Nm   = 133.1μ × 0.15

  μ  = 4 / (133.1×0.15)

      = 0.2003 N.s/m

The viscosity of the oil is 0.2003 N.s/m.

To learn more about the viscosity :

https://brainly.com/question/2193315

#SPJ1

Answer:40m/s

Explanation:2400/60