For problems that involve an object accelerating along an inclined plane, how can the weight be used to determine the force component that causes motion? The weight is the full force that acts perpendicular to the surface of the ramp. The weight times the cosine of the ramp's angle is the force perpendicular to the ramp. The weight times the sine of the angle of the ramp acts down along the ramp. O The weight times the cosine of the angle of the ramp acts down along the ramp.​

Answer:

Explanation:

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Answer:

The total frictional force equals 60 N

Explanation:

We know that F - f = ma where F is the applied force, f is the frictional force, m the mass of the object and a its acceleration.

Now, since the cart moves with constant velocity, its acceleration is zero. So, a = 0.

So F - f = ma

F - f = m(0) = 0

F - f = 0

So, F = f

From the above, we see that the frictional force equals the applied force which is equal to 60 N.

So, f the total frictional force equals 60 N

A magnet attract a steel nail for the reason that nail is a temporary magnet whether or not it is in a magnetic field. The correct option is B.

A substance that is negatively charged at one end and positively charged at another end creating the magnetic field around it.

A nail is a magnet that can attract the particle that are charged. The nail is a temporary magnet whether or not it is in a magnetic

field.

Magnets have their own magnetic properties. They can be permanent or temporary. Magnets are made by induction or rubbing process or by cutting into small magnet pieces.

Thus, the correct option is B

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Answer:

The correct answer is:

Explanation:

the iorn in the steel becomes magnetized when the nail is in a magnetic field

Mass is how heavy is an object is

Answer:

The answer is the third one.

C.

Hope this helps!

Answer:

1.5 m\s Ans ......

Explanation:

Data:

f = 0.5 Hz

w = 3 m

v = ?

Formula:

v = fw

Solution:

v = (0.5)(3)

v = 1.5 m\ s Ans ........

The positively charged ion with the greatest concentration in the blood is sodium.

Sodium (Na+) is the positively charged ion with the highest concentration in the blood. Sodium ions play a crucial role in various physiological processes, including the regulation of fluid balance, nerve impulse transmission, and muscle function. The concentration of sodium in the blood is carefully regulated to maintain proper cellular function and overall health.

Sodium is an essential electrolyte, and its concentration is primarily controlled by the kidneys through processes like reabsorption and excretion. The concentration of sodium in the blood is measured in millimoles per liter (mmol/L) or milliequivalents per liter (mEq/L). The normal range for sodium concentration in the blood is typically around 135-145 mmol/L.

While other positively charged ions like calcium, magnesium, and potassium also exist in the blood, their concentrations are generally lower compared to sodium. Calcium, for example, is mainly involved in bone health, muscle contraction, and nerve function. Magnesium is necessary for enzyme function, energy production, and muscle relaxation. Potassium is crucial for maintaining proper heart function, nerve transmission, and muscle contractions. However, in terms of concentration, sodium predominates among these ions in the bloodstream.

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Answer:

Pensamiento crítico.

Explicación:

El pensamiento crítico es ese tipo de pensamiento que surge en un individuo o en un proceso, fomentado por la indagación y el cuestionamiento. Desde el punto de vista de un estudiante, el aprendizaje basado en la indagación se centra en investigar un problema utilizando un método científico. En este tipo de aprendizaje, el razonamiento se realiza a la luz de la evidencia y se resuelve el problema para extraer una conclusión, la cual debe ser defendida mediante un razonamiento fuerte. Este tipo de indagación ayuda al individuo a aprender cosas nuevas.

Answer:

A

Explanation:

The effects due to light from distant stars

The characteristics of the solar system would have to be known or calculated in order to send a probe to a distant planet, such as Jupiter, due to the effects of the gravity from the other planets. Hence, option C is the correct answer.

When sending a probe to a distant planet, such as Jupiter, one of the critical factors that would have to be known or calculated is the effects due to the gravity from the other planets in the solar system. The gravitational interactions between the planets can significantly influence the trajectory and path of the probe during its journey. Accurate calculations are necessary to ensure that the probe's trajectory is properly planned and adjusted to reach its destination with precision. Hence, option C is the correct answer.

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Speed = Wavelength * Frequency

Answer:

2=6

3=9

Explanation:

I think this is right I'm not sure but I have done problems like this and did based on what I remember.

The average acceleration of the 3 kg block is 4 m/s².

The given parameters;

According to Newton's third law of motion, action and reaction are equal and opposite.

The force exerted on both blocks are equal and opposite.

\(F = ma\\\\m_1 a_1 = m_2a_2\\\\a_2 = \frac{m_1 a_1}{m_2}\\\\a _2 = \frac{2\times 6}{3} \\\\a_2 = 4 \ m/s^2\)

Thus, the average acceleration of the 3 kg block is 4 m/s².

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Given that the initial speed, u = 0 m/s , final speed, v = 82.7 m/s and the time is, t = 60 s.

(a) To find acceleration.

Formula to find acceleration is

Substituting the values in the above equation, we get

Thus, the acceleration is 1.38 m/s^2.

(b) To find displacement.

The formula to find displacement is

Substituting the values in the above equation, we get

(c) To find final speed, v' when time, t'= 80 s

Formula to find final velocity,

Substituting the values in the above equation, we get

Thus, the final speed is 110.4 m/s for the first 80 s.

(d) The speed of the car is v''=50 m/s and acceleration, a'=60.2 m/s^2

To find the distance, s'.

The formula to find the distance is

Substituting the values, we get distance as

Thus, the distance is 20.76 m.

Answer:

9.82 m/s²

Explanation:

        ⇒ T = 2π√(L/g) [← Important]

Original Time Period [To calculate length of the string]

Calculating value of g' (new acceleration)

Hope it helped~

"The slingshot converts elastic potential energy to kinetic energy."

As we already know that the elastic energy is stored in the sling when the slingshot is stretched to a certain extent,

U = 1/2 k x²

where,

k is elastic constant of the sling

x is the elongation of the sling

When we release the sling from that position then the shot will move with certain kinetic energy from it and sling comes to its natural length.

We can therefore conclude that the elastic potential energy of the sling will transform into the kinetic energy in this situation.

Thus, the answer is from elastic potential energy to kinetic energy.

The given question is incomplete. The complete question is ' The slingshot converts elastic potential energy to ___ energy.'

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Answer:

Explanation:

True

A wooden block of mass M resting on a frictionless, horizontal surface is attached to a rigid rod of length l and of negligible mass, the angular momentum of the bullet-block system about a vertical axis through the pivot is zero.

The initial and final angular momenta must be considered to determine the angular momentum of the bullet-block system about a vertical axis through the pivot.

Here, it is given that:

Mass of the wooden block (M)

Mass of the bullet (m)

Speed of the bullet (v)

Length of the rod (l)

Moment of Inertia of the Block (I_block):

The block is rotating about its center of mass, so the moment of inertia of the block is given by:

I_block = (1/12) * M * \(l^2\)

I_bullet = m * (l/2)^2 = (1/4) * m * \(l^2\)

Angular velocity (ω) can be determined using the conservation of angular momentum.

Since there is no external torque acting on the system, the initial angular momentum (which is zero) is equal to the final angular momentum (L).

L = 0 = (M + m/3) * l^2 * ω

Solving for ω, we find:

ω = 0

Thus, the angular momentum of the bullet-block system about a vertical axis through the pivot is zero.

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Your question seems incomplete, the probable complete question is:

When rain is falling vertically at 8m/s then the speed of the car is calculated to be 4.618 m/s.

The velocity of the raindrops adds to the velocity of the car to produce a velocity of the rain relative to the car.

As the surface becomes rougher, friction increases and on rainy days, we are more likely to slip because water acts as a lubricant between feet and the ground. Dry friction is converted to fluid friction by rainwater.  Rain drops have a uniform type of motion

Given rain is falling vertically with 8 m/s speed

and rain drop makes an angle of  30°

As we know that, tan∅ = V (horizontal) / V (vertical)

Hence,  V (horizontal)= tan ∅ *  V (vertical)

= tan (30° ) * 8

speed of the car​ = 4.618 m/s.

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Answer:

684.5 is the weight on mars and 1813 on earth

Explanation:

185*3.7=684.5 185*9.8=1813 you multiply for earth by 9.8 because that's the gravity on earth and you multiply by 3.7 because that's the gravity on mars

684.5 is the weight on mars and 1813 on earth

Weight on mars:

\(= 185 \times 3.7\)

= 684.50

And, weight on earth is

 \(= 185\times 9.8\)

=1813

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Answer:

28.39 g

Explanation:

D= m ÷ v

So, M= D × V

0.835 × 34= 28.39

Answer:

C. 28.39 g

Explanation:

took the test<3

The forces that act on the bicycle + rider system are Gravity, normal force, static friction, kinetic friction, air resistance, and rolling friction.

The force that pulls objects toward the center of a planet or another body is called gravity. All the planets are maintained in their orbits around the sun due to the force of gravity.

The force surfaces exert to prevent solid objects from passing through one another is known as the normal force.

When there is no relative motion between the object and the surface, a body is subject to a particular form of friction force known as static friction.

The forces that oppose the motion of an object as it travels through the air are known as air resistance.

A force called rolling friction opposes a rolling object's motion on a surface. Rolling resistance is another name for rolling friction.

Hence, Gravity, normal force, static friction, kinetic friction, air resistance, and rolling friction are the forces acting on the bicycle and rider system.

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Answer:

From least to greatest: Neon, Sodium, Silicon, Iron, Uranium

Explanation:

Here are all the atomic numbers for each one:

Iron = 26

Sodium = 11

Uranium = 92

Neon = 10

Silicon = 14

Hope this helps! :D

The magnetic field of a solenoid is analogous to the electric field of a charged parallel-plate capacitor.

A solenoid is a long coil of wire wound tightly in the form of a cylinder. When an electric current flows through the solenoid, a magnetic field is generated inside it. This magnetic field is similar to the electric field that exists between the plates of a charged parallel-plate capacitor.

In both cases, the field lines are uniformly distributed and run parallel to each other. The strength of the field is proportional to the current for a solenoid and the charge for a capacitor.

Additionally, the magnetic field of a solenoid is similar to the electric field of a capacitor because they both exhibit a directional property, creating a preferred direction for the field lines.

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The different states of matter contain different amount of kinetic energy and stability.

The state of matter is one of the distinct forms in which the matter can exist in nature. Four states of matter which are observable in everyday life include solid, liquid, gas, and plasma.

The highest amount of energy is present in the state which is the most unstable state of matter which is the gaseous state. And, the lowest amount of energy is present in the solid state of matter. With the increase in temperature, the solid matter is converted into liquid, which is further converted into gaseous matter. This is due to increase in the kinetic energy of the molecules present in the matter.

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The Bernoulli effect is a phenomenon in fluid dynamics where an increase in fluid velocity leads to a decrease in pressure.

In the case of winds in Boulder, Colorado, with sustained speeds of 45.0 m/s, there would be a decrease in pressure above the roof due to the Bernoulli effect.

To calculate the force due to the Bernoulli effect on a roof with an area of 200 m2, we need to know the pressure difference caused by the wind. Without knowing more specific details about the roof, such as its shape and height, it's difficult to accurately calculate this pressure difference.

However, we do know that the Bernoulli effect on the roof would be one factor contributing to the overall force of the wind on the roof. Other factors, such as the direct impact of the wind and the weight of any snow or debris that the wind may carry, would also need to be considered when assessing the potential damage or structural integrity of the roof.

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The length and orientation of the road in a frame of reference that is moving with the given velocity  in a direction making an angle of 30 degrees with the road is calculated to be 2.641 meters and  16.83 degrees respectively.

Let's first calculate the velocity of the road in the frame of reference that is moving with a velocity of 0.6c. We can use the velocity addition formula to calculate this:

v' = (v - u) / (1 - uv/c²)

where

v = velocity of the road

u = velocity of the frame of reference = 0.6c

c = speed of light

Since the road is at rest in its own frame of reference, v = 0. Substituting the values, we get:

v' = (-0.6c) / (1 - 0.6c × 0 / c²)

v' = -0.8824c

The negative sign indicates that the road appears to be moving in the opposite direction in the moving frame of reference.

Now, let's calculate the length of the road in the moving frame of reference. We can use the length contraction formula to calculate this:

L' = L × √(1 - v'²/c²)

where

L = length of the road

v' = velocity of the road in the moving frame of reference

Substituting the values, we get:

L' = 5 × √(1 - (-0.8824c)²/c²)

L' = 2.641 meters

Therefore, the length of the road in the moving frame of reference is 2.641 meters.

Finally, let's calculate the orientation of the road in the moving frame of reference. We are given that the direction of the velocity of the frame of reference makes an angle of 30 degrees with the road. We can use the following formula to calculate the angle between the road and the velocity of the frame of reference in the moving frame of reference:

tan(e') = (tan(e) - u/c) / (1 - u×tan(e)/c)

where

e = angle between the road and the velocity of the frame of reference

u = velocity of the frame of reference = 0.6c

e' = angle between the road and the velocity of the frame of reference in the moving frame of reference

Substituting the values, we get:

tan(e') = (tan(30) - 0.6c/c) / (1 - 0.6c×tan(30)/c)

tan(e') = 0.294

Taking the inverse tangent, we get:

e' = 16.83 degrees

Therefore, the orientation of the road in the moving frame of reference is 16.83 degrees and the length of the road in the moving frame of reference is 2.641 meters.

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The complete question is :

Given a road of length 5 meters, calculate the length and orientation of the road in a frame of reference that is moving with a velocity of 0.6c in a direction making an angle of 30 degrees with the road.

Answer: I hope you find it useful

Explanation: Group 2 elements have two valence electrons. The two valence electrons are easily lost in the formation of chemical bonds. Once the two electrons are lost, the atom then has a full outer shell and is therefore more stable.

so,  if an atom has valency 2 , then it means that the atom can combine with 2 other atoms .

When a train applies the brakes, it is moving at a speed of 79 feet per second. It slows down until it stops at a steady pace of 0.8 feet per second per second. Give a decimal response. The train will need to halt on foot. Therefore, the answer is in decimal.

The vector quantity velocity (v), denoted by the equation v = s/t, quantifies displacement (or change in position, s), over the change in time (t). Speed (or rate, r) is a scalar number, denoted by the equation r = d/t, that quantifies the distance traveled (d) over the change in time (t). Thus, the Velocity of a moving object can be calculated by using the formula, v = Δs/Δt.

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