which one is the biggest unit of plane angle
radian degree or revolution

If the dog walked at a constant speed the whole way, the graph of the dog's position versus time would be a straight line. This is because the dog's velocity (which is the derivative of position with respect to time) would be constant, and the acceleration (which is the derivative of velocity with respect to time) would be zero.

A straight line on a position-time graph indicates that the object is moving at a constant velocity. The slope of the line would be equal to the velocity of the dog.

If the graph is a horizontal line, it would indicate that the dog is at rest. If the line slopes upward, the dog is moving in the positive direction (for example, to the right in a position-time graph), and if the line slopes downward, the dog is moving in the negative direction.

In all, A constant speed means a constant velocity and the line is a straight line with a particular slope.

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Answer:   the acceleration of the masses is given by = 0, which means the angular acceleration of the pulley is zero. This implies that the masses m and 2m move with constant velocity,  they are in equilibrium.

The statement" The direction of the force on the charge placed in the electric field is upward" is false because the direction of the force on a negative charge (-6 C) placed in an upward-directed uniform electric field of magnitude 24 N/C would be downward.

The direction of the force on a charged particle placed in an electric field is determined by the charge of the particle and the direction of the electric field. In this case, a charge of -6 C is placed in an electric field directed upward with a magnitude of 24 N/C.

The force on a charged particle in an electric field can be calculated using the formula:

F = q * E

Where F is the force, q is the charge of the particle, and E is the electric field.

Since the charge q in this case is negative (-6 C) and the electric field E is directed upward, we can substitute the values into the formula:

F = (-6 C) * (24 N/C)

F = -144 N

The negative sign in the force value indicates that the force is in the opposite direction to the electric field. Therefore, the force on the charge placed in the electric field is downward, not upward.

The force on a negative charge is always opposite to the direction of the electric field. This is because negative charges experience an attractive force towards positive charges, and electric fields are directed from positive charges to negative charges.

Therefore, the statement "The direction of the force on the charge placed in the electric field is upward." is false.

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Answer:add resistance in the parallel circuit with the total resistance

Explanation:

the total resistance in the parallel circuit is also add resistance.

Answer:

4000 Nm^-2

Explanation:

Dude that "zam" drove me away, anyway:

Given:

Force on the large piston (F1) = 4000 N

Cross-sectional area of the large piston (A1) = 1 m²

Cross-sectional area of the small piston (A2) = zam (let's assume zam represents the area in square meters)

According to Pascal's law, the pressure exerted on the large piston (P1) is equal to the pressure exerted on the small piston (P2):

P1 = P2

Pressure is defined as force divided by area:

P1 = F1 / A1

P2 = F2 / A2

Since P1 = P2, we can equate the two expressions:

F1 / A1 = F2 / A2

Rearranging the equation to solve for F2, the force on the small piston:

F2 = (F1 / A1) * A2

Substituting the given values:

F2 = (4000 N / 1 m²) * zam

Now, to calculate the pressure exerted on the small piston (P2), we can divide the force by the area:

P2 = F2 / A2

Substituting the values we obtained:

P2 = [(4000 N / 1 m²) * zam] / zam

The area "zam" cancels out in the equation, leaving us with:

P2 = 4000 N/m²

Therefore, the pressure exerted on the small piston is 4000 N/m².

To determine the effort required on the small piston, we need to know the area of the small piston. Once we have that information, we can substitute it into the equation for F2 to calculate the effort required

Answer: Limestone Caves

Explanation: The most common feature that can be caused purely by chemical weathering is Karst Landscape, which can lead to caverns and sinkholes.

Answer:

 Δt = 5.85 s

Explanation:

For this exercise let's use Faraday's Law

           emf = \(- \frac{d \phi}{dt}\) -  d fi / dt

           \(\phi\) = B. A

           \phi = B A cos θ

The bold are vectors. It indicates that the area of the body is A = 0.046 m², the magnetic field B = 1.4 T, also iindicate that the normal to the area is parallel to the field, therefore the angle θ = 0 and cos 0 =1.

suppose a linear change of the magnetic field

            emf = - A \(\frac{B_f - B_o}{ \Delta t}\)

             Dt = - A  \(\frac{B_f - B_o}{emf}\)

the final field before a fault is zero

let's calculate

            Δt = - 0.046 (0- 1.4) / 0.011

            Δt = 5.85 s

Answer:

The angle between the electric field lines and the equipotential surface is 90 degree.

Explanation:

The equipotential surfaces are the surface on which the electric potential is same. The work done in moving a charge from one point to another on an equipotential surface is always zero.

The electric field lines are always perpendicular to the equipotential surface.

As

\(dV = \overrightarrow{E} . d\overrightarrow{r}\\\\\)

For equipotential surface, dV = 0 so

\(0 = \overrightarrow{E} . d\overrightarrow{r}\\\\\)

The dot product of two non zero vectors is zero, if they are perpendicular to each other.

The expression for the work done is given as

*Here Q is the charge

*Here V is the potential difference

The work done in the electric circuit is the product of charge (Q) flows and the potential difference (V) in the circuit.

The basic standard unit for the work done is in Joules.

The speed of the artillery shell when it hits its target is 100 m/s.

Given:

Initial vertical displacement (y) = 200 m

Vertical displacement at 100 m in the air (y') = 100 m

Final velocity in the vertical direction (vy') = 0 m/s (at the highest point of the trajectory)

Using the equation for vertical displacement in projectile motion:

y' = vy^2 / (2g),

where g is the acceleration due to gravity (approximately 9.8 m/s^2), we can solve for the initial vertical velocity (vy).

100 m = vy^2 / (2 * 9.8 m/s^2),

vy^2 = 100 m * 2 * 9.8 m/s^2,

vy^2 = 1960 m^2/s^2,

vy = sqrt(1960) m/s,

vy ≈ 44.27 m/s.

Now, since the horizontal motion is independent of the vertical motion, the horizontal speed of the shell remains constant throughout its trajectory. Therefore, the speed of the shell when it hits its target is 100 m/s.

Hence, the speed of the artillery shell when it hits its target is 100 m/s.

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Answer:

3x864/y488bjehdksuwiieirjr

Electronics Tutorial on the Current Source and how independent and dependent sources can be used to describe continuous current sources.

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The volume of the helium balloon in order to lift the weight is 17,760m³.

To find the answer, we need to know about the buoyant force.

     => V= 3179/0.179 = 17,760m³

Thus, we can conclude that the volume of the helium balloon in order to lift the weight is 17,760m³.

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Answer:

D

Explanation:

The motion of an object can be described by its speed, position, and direction so its all of the above

Answer:

213 nA

2.13 mA

851e^-t μA

Explanation:

We have a pretty straightforward question here.

Ohms Law states that the current in an electric circuit is directly proportional to the voltage and inversely proportional to the resistance in the circuit. It is mathematically written as

V = IR, since we need I, we can write that

I = V/R

a) at V = 1 mV

I = (1 * 10^-3) / 4.7 * 10^3

I = 2.13 * 10^-7 A or 213 nA

b) at V = 10 V

I = 10 / 4.7 * 10^3

I = 0.00213 A or 2.13 mA

c) at V = 4e^-t

I = 4e^-t / 4.7 * 10^3

I = 0.000851e^-t A or 851e^-t μA

Answer:

A. pi1 = 690 kg m/s

B. Δp1 = - 690 kg m/s

C. The two changes in momenta are equal in magnitude and opposite in direction.

D. v2i = -6.16 m/s

Explanation:

Part A.

The momentum can be calculated as mass times velocity, so the initial momentum of the 92-kg player is equal to

pi = mv

pi = (92 kg)(7.5 m/s)

pi = 690 kg m/s

So, the initial momentum of the 92-kg player was 690 kg m/s

Part B.

After the collision, each player has zero velocity, so the final velocity will be 0 m/s. Then, the change in momentum is equal to

Part C.

In a closed system the momentum is conserved, so to conserve the momentum the change in momentum of the 92-kg player should be equal in magnitude but opposite in direction. Then, when we add them, the sum should be equal to 0. So, the answer is:

The two changes in momenta are equal in magnitude and opposite in direction.

Part D.

Taking into account part C, we can write the following equation

Since the final velocity of the 112-kg player is also 0 m/s, we can solve for v2i as

Replacing the values, we get

Therefore, the answers are:

A. pi1 = 690 kg m/s

B. Δp1 = - 690 kg m/s

C. The two changes in momenta are equal in magnitude and opposite in direction.

D. v2i = -6.16 m/s

Answer:

In general, a vector equation is any function that takes any one or more variables and returns a vector. The vector equation of a line is an equation that identifies the position vector of every point along the line. This works for straight lines and for curves.

Explanation:

1.A vector has magnitude (size) and direction:

2.a − b.

3.A vector is often written in bold, like a or b.

4.The vector a is broken up into.

5.We can then add vectors by adding the x parts and adding the y parts:

6.When we break up a vector like that, each part is called a component:

7.|a|

8.||a||

(hope this helps can i plz have brainlist :D hehe)

It struck him with 60 W of power. when a 10 kg rock hits a guy after falling from a height of 18 m and landing on him after around 3 s.

Power is the rate of production of work. P=Wt. The watt (W), which is equal to 1 joule per second (1J/s), is the SI unit for power. Power is a measure of how quickly energy is used up since power is the transfer of energy. An example would be a 60-W light bulb, which uses 60 J of energy every second.

Power= mass. velocity + power=10*18/3*10 = 60 W,

resulting in the power of a falling rock being 60W.

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\(\qquad\qquad\huge\underline{{\sf Answer}}\)

The Correct choice is : D

Neutrons and Protons are collectively known as Neucleons because they are found in nucleus of the cell and they have almost equal mass, [ but neutron has slightly greater mass than proton ]. also, Neutrons are neutral particle with no charge on them, where as protons have positive charge on them. making nucleus positively charged altogether ~

Answer:

Option D

Explanation:

Answer:

2.45 m/s

Explanation:

kinetic energy = 1/2 * m * v^2

then, 0.5 * 2500 * x^2 = 0.5 * 67 * 15^2

by solving for x, X = 2.45 m/s

The torque is equal to zero since the coil is in equilibrium. As a result, will also equal zero, indicating that the coil's plane is parallel to the vertical direction at equilibrium.

The current-carrying coil in a magnetic field is given by:

τ = μ * B * I * A * sin(θ)

where:

τ = torque (in Nm)

μ = magnetic moment of the coil (in Am^2)

B = magnetic field strength (in T)

I = current flowing through the coil (in A)

A = area of the coil (in m^2)

θ = angle between the plane of the coil and the magnetic field (in radians)

μ = N * A * I

N = number of turns of the coil

A = area of the coil (in m^2)

I = current flowing through the coil (in A)

the equations to calculate the angle θ:

m = 0.100 kg (mass of the wire)

L = 4.00 m (total length of the wire)

side length = 0.100 m

I = 3.80 A (current flowing through the coil)

B = 0.0100 T (magnetic field strength)

Calculations:

A = side length^2 * N = 0.100^2 * 1 = 0.0100 m^2

μ = N * A * I = 1 * 0.0100 * 3.80 = 0.0380 Am^2

Now we can rearrange the equation for torque to solve for θ:

θ = arcsin(τ / (μ * B * I * A))

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It's important to know that both skykdivers have the same veloxcity before they pull their parachute because the gravity is the same for both. However, when they open the parachute, the force exerted upside depends on the weight of the person, specifically, the drag force of the parachute is greater if the weight of the skydiver is greater (supposing that that there's no external forces involved).

However, the heavieast person will have greater velocity at the end.

Answer:

The detector temperature doesn't affect retention time

Explanation:

Retention time is one of the chromatographic parameters. Is defined as the time of a compound spends from injection to detection.

A solute in GC is added to the injector where is volatilized. When volatilized, it pass through a column until the detector.

The detector temperature doesn't affect retention time. To change retention time you must change injector temperature or column temperature. An increase in column or injector temperature results in a decrease in retention time.

Answer:

214.72m

Explanation:

The range (R) of a projectile can be calculated using the formula:

R = u²sin2θ/g

Where R = Horizontal range

u = initial velocity

θ = angle of initial velocity

g = acceleration due to gravity (9.8m/s²)

According to the provided information in this question, R= ?, u= 51m/s, θ = 63°, g = 9.8m/s².

Hence, R = u²sin2θ/g

R = 51² × sin 2×63/ 9.8

R = 2601 × sin 126/9.8

R = 2601 × 0.809/9.8

R = 2104.25/9.8

R = 214.72m

Answer:

W = 6000 Joule

Explanation:

Work is defined as force times distance

W = F * d

We know that F = 15N, we just need the distance (d)

Imagine you have a square lawn with length of 10 m and width of 20m. So, we want to know the the distance you have to travel to cover every square meter of the lawn.

The width of the mower is only 50 cm = 0.5 m.

This means that you have to go back and forth 40 times to cover 20m (lawn width), with a distance of 10 m (lawn length). So,

d = 10 (meter) * 40 (times) = 400 meter

Therefore:

W = (15) * (400) = 6000 J