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dezoksy [38]
3 years ago
12

Help me answer this please!

Physics
1 answer:
Westkost [7]3 years ago
3 0

Answer:

Option iv

Explanation:

The acceleration due to gravity (g) of the earth is constant (i.e 9.81 ms¯²). As long as the stone remains within the earth, the acceleration due to gravity experienced by the stone will be 9.81 ms¯².

The maximum height reached by an object is the height where the object no longer have velocity to move further hence it begins to fall back. At this point (i.e at the maximum height), the velocity of the object is zero.

Summary:

At maximum height:

Acceleration due to gravity of the stone = 9.81 ms¯²

Velocity = 0

Thus, option iv gives the correct answer.

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A wire carries current in the plane of this screen toward the top of the screen. The wire experiences a magnetic force toward th
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Answer:

The direction of the magnetic field causing this force is

In the plane of the screen and towards the bottom of the egde

Explanation:

This is by applying Fleming s right hand rule which explains that

When a conductor such as a wire attached to a circuit moves through a magnetic field, an electric current is induced in the wire due to Faraday's law of induction. The current in the wire can have two possible directions. Fleming's right-hand rule gives which direction the current flows.

The right hand is held with the thumb, index finger and middle finger mutually perpendicular to each other (at right angles), as shown in the diagram.[1]

The thumb is pointed in the direction of the motion of the conductor relative to the magnetic field.

The first finger is pointed in the direction of the magnetic field. (north to south)

Then the second finger represents the direction of the induced or generated current within the conductor (from the terminal with lower electric potential to the terminal with higher electric potential, as in a voltage source)

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3 years ago
An object is pulled with two forces, 10 N northward and 15 N southward. The direction of the net force is to the An object is pu
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Answer:

check image

Explanation:

For any question related to newons law of motion first draw the free body diagram(FBD),

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4 years ago
Which equipment would help you separate a liquid mixture by distillation?
anzhelika [568]
Distillation is a process in many laboratories for the purpose of separating and/or purifying components of a liquid mixture. The distillation apparatus used consists of three major parts: <span>distillation flask - to heat the mixture and volatilize the components, a condenser to cool the vapors back to liquid state, and a collection vessel.  The apparatus is typically made of glass and therefore subject to breakage.</span> <span>All components of the distillation apparatus should be protected to a stable stand or rack to avoid it from falling over.</span>
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3 years ago
A gas cylinder contains argon atoms (m=40.0 u). The temperature is increased from 286 K (13°C) to 362 K (89°C) (a) What is the c
Rama09 [41]

Answer:

(a). The change in the average kinetic energy per atom is 1.57\times10^{-21}\ eV.

(b). The change in vertical position is 2413 m.

Explanation:

Given that,

Mass = 40.0 u

The increased temperature from 286 K to 362 K.

(a). We need to calculate the change in the average kinetic energy per atom

Using formula of kinetic energy

\Delta K.E=\dfrac{3}{2}k\Delta t

Put the value into the formula

\Delta K.E=\dfrac{3}{2}\times1.38\times10^{-23}\times(362-286)

\Delta K.E=1.57\times10^{-21}\ eV

(b). The change in potential energy of the container due to change in the vertical position

We need to calculate the change in vertical position

Using formula of potential energy

\Delta U=mg\Delta h

\Delta h =\dfrac{\Delta U}{mg}

\Delta h=\dfrac{1.57\times10^{-21}}{40.0\times1.66\times10^{-27}\times9.8}

\Delta h=2412.7=2413\ m

Hence, (a). The change in the average kinetic energy per atom is 1.57\times10^{-21}\ eV.

(b). The change in vertical position is 2413 m.

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4 years ago
After creating a prototype, which of the following would not be and appropriate next step in the design process of a new technol
Dafna11 [192]

The answer would be to research the need.  This should have been done before the project began.

6 0
4 years ago
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