Help asap please. How would I do this?​

Answer: 36 m/s

Explanation:

Wave speed = Wavelength * Frequency

12 * 3 = 36 m/s

Answer: 36 m/s

Explanation:

1. 55 km is distance the car travel on the trip.

Net distance = final distance - initial distance = 155 - 100 = 55km.

2. 110 km/hr is would be the average speed of the car in the question above if the trip took half an hour.

Average speed  = distance travelled/ time =  55km/0.5hr

Hence, average speed = 110km/hr

The average speed is the full distance traveled with the aid of the object in a particular time interval. The average speed is a scalar quantity. it is represented via the significance and does not have path. average pace is calculated by way of dividing distance through time.

Speed is the directional pace of a object in movement as a demonstration of its price of alternate in role as discovered from a selected frame of reference and as measured by way of a particular trendy of time.

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Answer:

It will be doubled

Explanation:

F = ma

Let's consider m = 1 (the mass of the cart is not changing so it is constant),

F = 2, and a = 4.

2 = 1 x 4

When doubling force we need to maintain equality so acceleration should double too. To understand it better find the ratio of force and acceleration 2/4 = 1/2. The ratio of force to acceleration should always equal half in all scenarios, this way we can see how equality is maintained.

2x2 = 1 x (4x2)  

4 = 1 x 8, and the ratio of force to acceleration is 4/8 = 1/2.

Answer:a no net force

Explanation: google lol

The take-off speed of the plane as it accelerate from rest is 36.65 m/s.

Speed can be defined as the ratio of distance to time.

To calculate the the take-off speed of the plane, we use the formula below.

Formula:

Make v the subject of the equation

Where:

From the question,

Given:

Substitute these values into equation 1

Hence the take off speed of the plane is 36.65 m/s.

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A) Minimum recommended spiral parameter: 150.03m.

b) Distance P: 150.03m.

c) Distance Q: 4.122m.

d) Angle Φs: 16°30'14.0".

e) Distance Tc: 150.03m.

a) Calculation for the minimum recommended spiral parameter:

Design radius (R) = 300 m

Maximum superelevation (e_max) = 0.06 m/m

Spiral Parameter (A) = (R + e_max) / 2

A = (300 m + 0.06 m/m) / 2

A ≈ 150.03 m

b) Calculation for the distance P:

Distance P is equal to the length of the first spiral curve, which is the same as the minimum recommended spiral parameter.

P ≈ 150.03 m

c) Calculation for the distance Q:

Distance Q represents the length of the circular curve. It is given by the formula:

Q = (Deflection angle at Point of Intersection) / (Degree of Curve, D)

Deflection angle at Point of Intersection = 16°30'14.0"

Converting the angle to decimal degrees:

16° + (30'/60) + (14.0"/3600) = 16.504°

Q = 16.504° / (360° / D)

Q ≈ D / 21.814

Since the RAU80 has 4 lanes, the degree of curve (D) is 360° / 4 = 90°.

Q ≈ 90° / 21.814

Q ≈ 4.122 m

d) Calculation for the angle Φs:

The angle Φs is the deflection angle at the Point of Intersection.

Φs = 16°30'14.0"

e) Calculation for the distance Tc:

Distance Tc is equal to the length of the second spiral curve, which is the same as the minimum recommended spiral parameter.

Tc ≈ 150.03 m

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Answer:

The lower mantle is the liquid inner layer of the earth from 400 to 1,800 miles below the surface.

Explanation:

Answer:

Explanation:

The initial vertical velocity is 540sin55° = 442.342103... 442 m/s

The initial horizontal velocity is 540cos55° = 309.731275... 310 m/s

In the real world, both initial velocities would be reduced by air resistance and vertical velocity will be altered by gravity.

The energy due to work done in separating the plates goes into the battery and not into the capacitor. Work done on the charges is not included in the energy stored in the capacitor.

a. The capacitance of a parallel-plate capacitor is given by C = εA/d, where ε is the permittivity of free space, A is the area of each plate, and d is the distance between the plates. Using the given values, we get:

C = \((8.85 × 10^-12 F/m)(0.2 m)^2 / (0.001 m) = 7.08 × 10^-10 F\)

The energy stored in a capacitor is given by \(U = (1/2)CV^2,\) where V is the voltage across the capacitor. Using the given values, we get:

\(U = (1/2)(7.08 × 10^-10 F)(50 V)^2 = 8.85 × 10^-4 J\)

b. The capacitance of the capacitor changes when the distance between the plates is changed. The new capacitance is given by:

\(C' = (8.85 × 10^-12 F/m)(0.2 m)^2 / (0.002 m) = 7.08 × 10^-11 F\)

The voltage across the capacitor remains the same as it is still connected to the 50-V battery. The energy stored in the capacitor now is:

U' = (1/2)(7.08 × 10^-11 F)(50 V)^2 = 1.77 × 10^-5 J

c. When the battery is disconnected, the charge on the plates remains constant. The new capacitance and voltage are given by:

C' = (8.85 × 10^-12 F/m)(0.2 m)^2 / (0.002 m) = 7.08 × 10^-11 F

V' = V(d/2)/(d) = (50 V)(0.001 m) / (0.002 m) = 25 V

The energy stored in the capacitor now is:

\(U' = (1/2)(7.08 × 10^-11 F)(25 V)^2 = 4.42 × 10^-6 J\)

d. The energy stored in the capacitor decreases in (b) because the voltage across the capacitor remains the same, but the capacitance decreases. This means that the charge on the plates decreases, and therefore, the energy stored in the capacitor also decreases.

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Answer: The displacement of the object is 5 units to the right.

Explanation: 0 + 3 - 4 + 6 = 5

(left is in the negative direction, whereas right is in the positive.)

Integers is referred to as the data type that is made up of whole numbers represented as binary values and is therefore denoted as option B.

This is referred to as discrete values which are used to describe information which could be in different forms such as quantity, quality etc.

Integers is referred to the data type which comprises of whole numbers represented as binary values and it could be zero , a positive or negative number and examples include 0, 1, -2 etc. This is therefore the reason why option B was chosen as the most appropriate choice.

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The common features of motion and chemical reaction are the movement of particles and the presence of kinetic energy.

Motion is the phenomenon in which an object changes its position concerning other objects. Motion is described in terms of displacement, distance, velocity, acceleration, and speed.

Chemical reactions occur when chemical bonds are formed between atoms. The substances that take part in a chemical reaction are known as the reactants whereas the substances that are produced at the end of the reaction are called the products.

So we can conclude that the movement of particles and the presence of kinetic energy are the common characteristics of motion and chemical reaction.

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The rating of a branch circuit is determined by its ampacity.

Ampacity is the maximum amount of electric current that a conductor or device can carry without overheating and damaging the insulation or conductors. The rating of a branch circuit is the maximum current that the circuit can safely carry without exceeding its capacity or causing damage.

This rating is typically determined by the size of the wire and the protective devices, such as fuses or circuit breakers, that are installed to prevent overloads and short circuits. Branch circuits are commonly used to power individual rooms or devices, such as outlets, lighting fixtures, and appliances. The ampacity of the branch circuit must be carefully calculated to ensure that it can handle the expected load and prevent the risk of electrical hazards.

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The rating of a branch circuit is determined by its design capacity to safely carry current expressed in terms of amperes. This prevents overheating or fire hazards. The total current flowing into a junction is equal to the total current flowing out, according to Kirchhoff's junction rule.

The rating of a branch circuit is chiefly determined by the amount of current it's designed to safely carry without overheating or causing a fire. This value is typically found in terms of amperes (or amps), which represent the unit of electrical current. An electrical appliance's requirement for operating is usually expressed in amps. Circuit breakers and fuses are also rated in amps and are designed to interrupt the circuit if the current exceeds their rated value for a specific period.

For measuring the current flowing through a branch, we use an instrument called an ammeter. It needs to be placed in series with the branch circuit, and it has a small resistance to limit its effect on the circuit.

In applications of Kirchhoff's first rule (the junction rule), each branch's current is labelled, and the direction it's going must be determined. However, the total current or the sum of the electric current flowing into and out of the junction (or point in the circuit where conductors meet) must be equal, according to the junction rule.

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Answer:

potential energy is transformed into kinetic energy

If we maintain the percent error in gexp constant, the ratio Δgexp/gexp should rise as l falls and fall as l rises. It implies that the experimental prediction of g is more sensitive to variations in string length for shorter lengths than longer lengths.

To compare the calculated uncertainty in gexp for the shortest and longest values of l to the percent error in gexp, we need to refer to the lab manual for the derivation of uncertainty in g. Let's assume that the lab manual provides the following formula for the uncertainty in g:

Δg = \((2π/T^2)\) * ΔT

where T is the period of oscillation, ΔT is the uncertainty in T, and Δg is the uncertainty in the acceleration due to gravity (g).

Now, let's consider the effect of the length of the string on the experimental prediction. From the formula for the period of oscillation of a simple pendulum, we know that:

T = 2π√(l/g)

where l is the length of the string and g is the acceleration due to gravity.

If we differentiate this equation with respect to l, we get:

dT/dl = π/(gT√(l/g))

Using this equation and the formula for the uncertainty in g, we can derive the uncertainty in T due to the uncertainty in l:

ΔT = \((T^2/(4π^2*l))\) * Δl

Substituting this expression for ΔT into the formula for the uncertainty in g, we get:

Δg = \((2π^2/(T^3*l))\) * Δl

Now, let's consider the shortest and longest values of l. If we assume that the percent error in gexp is the same for both values of l, then we can write:

Δg/gexp = Δl/l

Therefore, we can compare the calculated uncertainty in gexp for the shortest and longest values of l to the percent error in gexp by comparing the ratios Δgexp/gexp and Δl/l for the two values of l.

If we assume that the uncertainty in l is the same for both values, then the ratio Δl/l is the same for both values. Therefore, any difference in the ratio Δgexp/gexp between the two values of l must be due to the effect of l on the experimental prediction.

From the formula for the uncertainty in gexp, we can see that Δgexp is inversely proportional to \(T^3\) and l.

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the maximum elongation of the spring is  0.5 m.

Calculation :

given ,

           mass = 2Kg

           K (Spring constant) = 200 n/m

           speed = 5 m/s

At the point where it has a speed of 5 m/s there is only kinetic energy and at max elongation there is only potential energy.

    =     \(\frac{1}{2}MV^{2} = \frac{1}{2} Kx^{2}\)

 =   (1/2)*2*5² = (1/2)*200*x²

     = 25  = 100 x²

     = \(X = \sqrt{\frac{25}{100} }\)

     X = 0.5 m

Magnetically confined fusion plasmas, such as those produced in tokamak and stellarator, are characterized by typical geometries. Plasma shaping is the study of plasma shape in such devices and is of particular importance for next-stage fusion devices such as ITER. This shape partially determines the performance of the plasma. In particular, since the tokamak is an axisymmetric device, the shape of the plasma can be completely defined by its cross section.

Early fusion reactor designs tended to have circular cross-sections simply because they were easier to design and understand. In general, fusion machines that use a toroidal layout, such as tokamak and most stellarators, arrange the magnetic field so that the ions and electrons in the plasma move rapidly around the torus.

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You are skateboarding at a speed of 9.04 m/s when you start to go down a hill. The change in height from the top of the hill to the bottom of the hill is 38.8 meters.You will be going at a speed of approximately 27.59 m/s at the bottom of the hill.

To calculate the final speed at the bottom of the hill, we can use the principle of conservation of energy. At the top of the hill, the energy is in the form of potential energy, given by:

Potential Energy = mass × gravity × height

At the bottom of the hill, the potential energy is converted into kinetic energy, given by:

Kinetic Energy = 0.5 × mass × velocity^2

Since no energy is lost due to friction or air resistance (as mentioned in the question), the potential energy at the top of the hill will be equal to the kinetic energy at the bottom of the hill. Therefore, we can equate these two expressions:

mass × gravity × height = 0.5 × mass × velocity^2

Simplifying the equation by canceling out the mass:

gravity × height = 0.5 × velocity^2

Solving for velocity:

velocity^2 = (2 × gravity × height)

velocity = √(2 × gravity × height)

Plugging in the given values:

gravity = 9.8 m/s^2

height = 38.8 m

velocity = √(2 × 9.8 × 38.8)

velocity ≈ √(760.96)

velocity ≈ 27.59 m/s

Therefore, you will be going at a speed of approximately 27.59 m/s at the bottom of the hill.

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Explanation:

F = qE

where E is an electric field.

The denser lines of electric force are, the stronger electric field will be.

Since 4 is densest part, electric force on 4 is would be greatest.

The electric field would be stronger the denser the lines with electric force are. Since part 4 is the densest, its electric force would be greatest. Therefore, the correct option is option 4.

The force acting on the items is referred to as the electric force. When two electrons and two protons are put at equal distances, the electric force that separates them is equivalent to the electrostatic charge between the two.

The electric force primarily reliant on the quantity known as electric charge rather than the object's mass. Forces involving charges are the subject of electrostatics. Static refers to charges that aren't moving, or are moving very slowly. The electric field would be stronger the denser the lines with electric force are. Since part 4 is the densest, its electric force would be greatest.

Therefore, the correct option is option 4.

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Answer:

Latent heat

Latent heat is the heat needed to change a state without a change in temperature.

Explanation:

Hope this helps :D

Answer:

80%.

Explanation:

Question didn't state what is being looked for, but then....

Weight of the box, w = 100 N.

Length of the plane, L = 5 m

Force used, = 75 N

Length pushed through, = 3 m

Looking at the stated parameters, the first thing that comes to mind is to look or calculate for the efficiency of the machine.

Tha efficiency can be gotten by using the relation

Change in energy divided by work done. This is gotten by saying

(100 * 3) / (5 * 75) =

300/ 375 = 0.8

Therefore, the efficiency of the machine has been calculated to be 80% or 0.8

a)The total distance she walks will be 1100 m.

b)The magnitude and direction of the budgie's path will be 854.4 m at 69.44°.

c)Sally's average speed for the journey will be 2.82 m/sec

d)The average velocity of Sally's budgie willl be 2.19 m/sec North of East.

Displacement is defined as the shortest distance between the two points.

Distance travelled in north direction,d₁ = 8.0 x 10² m

Time elapsed  travelled in north direction,t₁ = 5.0 minutes

Distance travelled in east direction,d₂ = 0.30 km = 3.0 × 10² m

Time elapsed  travelled in east direction,t₂= 1.5 minutes

The total distance she walks,d =? m

The magnitude and direction of the budgies path will be, D

Sally's average speed for the journey, \(\rm S_{avg}\)

The average velocity of Sally's budgie,\(\rm V_{avg}\)

a)

The total distance she walks is found as;

d=d₁+d₂

d=800 m +300 m

d = 1100 m

b)

The magnitude and direction of the budgies path will be;

\(\rm D = \sqrt{d_1 ^2 + d_2^2 } \\\\ D = \sqrt{800^2 +300^2 } \\\\ D = 854.4 \ m\)

The direction of the displacement is;

\(\rm \theta = tan^{-1} \frac{800}{300} \\\\ \theta = tan^{-1}(2.6) \\\\ \theta = 69.44 ^ 0\)

c)journey is found as;

Sally's average speed for the

\(\rm S_{avg} = \frac{d}{t} \\\\ S_{avg} =\frac{100}{300+900} \\\\ S_{avg} =2.82 \ m/sec\)

d)

The average velocity of Sally's budgie is found as;

\(\rm V_{avg} = \frac{854.4}{300+ 900 } \\\\ V_{avg} = 2.19 \ m/sec\) North of east

Hence, the total distance she walks, the magnitude and direction of the budgie's path, Sally's average speed, and the average velocity of Sally's budgie will be 1100 m,854.4 m at 69.44°,2.82 m/sec, and 2.19 m/sec North of East.

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Answer:

An acceleration of 5m/s^2 means that the velocity of a body is increasing by 5m/s per second in a certain direction

Explanation:

We can use the Stefan-Boltzmann law to determine the power radiated by the sphere:

P = σA(T^4)

where P is the power, σ is the Stefan-Boltzmann constant (5.67 × 10^-8 W/m^2K^4), A is the surface area of the sphere, and T is the temperature of the sphere in Kelvin.

First, we need to determine the temperature of the sphere. We can use Wien's displacement law to do this:

λ_max = b/T

where λ_max is the peak wavelength of the emission spectrum (in meters), b is Wien's displacement constant (2.898 × 10^-3 mK), and T is the temperature of the sphere in Kelvin.

Converting the given infrared wavelength to meters, we get:

λ_max = 2.0 × 10^-6 m

Plugging in the values, we get:

2.0 × 10^-6 m = (2.898 × 10^-3 mK)/T

Solving for T, we get:

T = 1449 K

Now we can use the formula for power to find the answer:

A = πr^2 = π(1.0 cm)^2 = 3.14 × 10^-4 m^2

P = σA(T^4) = (5.67 × 10^-8 W/m^2K^4)(3.14 × 10^-4 m^2)(1449 K)^4 ≈ 2.9 W

Therefore, the sphere is radiating about 2.9 watts of power.

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The force which acts vertically downward and tends to opposite vertical upward motion of objects. Hence, the rocket ship must leave the gravitational pull of the earth due to its mass.

Therefore, the rocket ship must leave the gravitational pull of the earth due to its mass.

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Usually you have to add/subtract all the forces to get the real net force, value, and direction. In this case, is visual cause you don't have any number

F1 and F4 cancel

F2 and F5 cancel

F3 is the only force, but it should cancel with weight.

If the car is moving at constant speed and is not accelerating in any direction, then the force is 0

Answer:

The tractor applies 1,748.418 N to the plow.

Explanation:

Net Force

According to the second Newton's law, the net force exerted by an external agent on an object of mass m is:

Fn=m.a

If the acceleration is zero, then the net force is also zero. That means all forces acting on the mass are balanced.

The tractor drags the m=313 Kg plow at a constant speed, thus the acceleration is zero and so is the net force.

The horizontal forces acting on the plow are:

Since both forces are balanced, then:

Ft=Fr

The friction force is calculated as:

\(Fr=\mu \cdot N\)

Where \(\mu\) is the coefficient of friction between the plow and the ground and N is the normal force. In the situation described, the normal force is equal to the weight of the plow:

\(N=W=m.g=313*9.8=3,067.4\)

The normal force is N=3,067.4 N

The friction force is now calculated:

\(Fr=0.579 \cdot 3,067.4\ N\)

\(Fr=1,748.418\ N\)

Thus, the tractor applies 1,748.418 N to the plow.