PHYSICS HIGH SCHOOL

What is resultant vector?​

Answers

Answer 1
Answer:

Answer:

Is the sum of a vector of two or more vectors.

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An arrow is fired horizontally at a target that is 40 m away (horizontal d). The arrow drops 0.5 m before striking the target. With what velocity is the arrow fired (what is the horizontal vi)?
A toaster with a power rating of 1,000 watts is plugged into a household voltage of 120 volts. How much current runs through the toaster? A) 120,000 amps B) 880 amps C) 8.3 amps D) 0.120 amps
Which of the items has the least inertia while at rest? A. penny. B. airplane. C. frog. D. dog.

The longest wavelength within the visible spectrum is _______ light. A. blue
B. orange
C. red
D. violet

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The longest wavelength within the visible spectrum is the redlight. The answer is letter C. It is called visible light because it is theonly light that can be seen by the human eye. Red light is the longestwavelength around 620 to 750 nanometer. It is followed by orange which has awavelength of 590 t 620 nanometer. And then blue which has a wavelength of 450to 495 nanometer. And the shortest wavelength is violet which has a wavelengthof 380 to 459 nanometer.  

The longest wavelength within the visible spectrum is red light. The correct option is C.

The visible spectrum of light consists of different colors ranging from red to violet. Each color corresponds to a different wavelength. Among the given options, red light has the longest wavelength within the visible spectrum.

A. blue: Blue light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum.

B. orange: Orange light has a shorter wavelength compared to red light. It falls between red and yellow on the visible spectrum.

C. red: Red light has the longest wavelength among the visible colors. It is located on the longer end of the visible spectrum.

D. violet: Violet light has a shorter wavelength compared to red light. It is located on the shorter end of the visible spectrum, just after blue.

Therefore, the correct option is C. red as it has the longest wavelength within the visible spectrum.

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in a series circuit: 1) the relationship between total resistance and individual resistances is 2) the relationship between total voltage and individual voltages is 3) the relationship between total current and individual currents is

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1. The relationship between total resistance and individual resistances:

The total resistance(R_total) in a series circuit is equal to the sum of the individual resistances (R1, R2, R3, ...) connected in series. Mathematically, we can express this relationship as:

R_total = R1 + R2 + R3 + ...

In a series circuit, the total resistance increases as more resistors are added in series.

2. The relationship between total voltage and individual voltages:

In a series circuit, the total voltage (V_total) across the circuit is equal to the sum of the individual voltages (V1, V2, V3, ...) across each component. This relationship can be stated as:

V_total = V1 + V2 + V3 + ...

In a series circuit, the total voltage is equal to the sum of the individual voltage drops across each resistor.

3. The relationship between total current and individual currents:

In a series circuit, the total current (I_total) flowing through the circuit is the same at all points in the circuit.

This means that the current passing through each individual resistor is also equal to the total current. Mathematically, we can express this relationship as:

I_total = I1 = I2 = I3 = ...

In a series circuit, the current is constant throughout the circuit, and the same current flows through each component.

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What is the electric field experienced by a charged balloon if the charge on the balloon is 9.4 × 10-10 coulombs and the force it experiences is 8.2 × 10-2 newtons?

Answers

Answer:

Electric field, E=8.72* 10^7\ N/C

Explanation:

It is given that,

Charge on the balloon, q=9.4* 10^(-10)\ C

Force experienced by the balloon, F=8.2* 10^(-2)\ N

The relation between electric force and electric field is given by :

E=(F)/(q)

E=(8.2* 10^(-2))/(9.4* 10^(-10))

E=8.72* 10^7\ N/C

Hence, the electric field experienced by a charged balloon is 8.72* 10^7\ N/C
We know, F = q.E
E = F/q
Here, F = 8.2 * 10⁻²
q = 9.4 * 10⁻¹⁰

Substitute values into the expression:
E = 8.2 * 10⁻² / 9.4 * 10⁻¹⁰
E = 8.72 * 10⁷ N/C

Hope this helps!

Two technicians are discussing hydraulics. Technician A says that if pistons of the same size are used, motion and force can be increased or decreased. Technician B says that if a small piston acts upon a larger piston, the force of the larger piston will increase, but the distance it travels will decrease. Who is correct? A. Technician B only B. Technician A only C. Both Technician A and B D. Neither Technician A nor B

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the correct option is A. Only technician B is correct.

Hydraulics works on the pascal law, which states that in a direction the hydro static fluid pressure remains constant.

Px=Py=Pz

Since small piston has small area compare to the large piston

Pbig=Psmall

Fbig/Abig=Fsm/Asm

Fbig=(Abig)/(Asmall)*Fsmall

thus the force on the large piston will increase, but it travel small distance.

How to solve for vi in vf=vi+at?

Answers

Subtract 'at' from each side of that equation.

Heat transfer within a fluid takes place bya. convection currents.
b. radiation.
c. conduction.
d. density.

Answers

Heattransfer within a fluid takes place by convectioncurrents. The correct option is a.

Convection currents are principally responsible for heat transmission within a fluid. Heat is transferred through the fluid's own movement through convection.

Heat causes a fluid's particles to gain energy and lose density, which causes them to rise. Heat energy is carried upward by the heated fluid.

A cycle of circulationresults from the movement of colder fluid from the surroundings into its place in the interim.

Through this mechanism, heat can be moved from hotter to cooler areas of the fluid. Convectioncurrents are frequently seen in fluids like air and liquids, and they're important for both engineering and a variety of natural occurrences.

Thus, the correct option is a.

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Answer:

the answer is A. convection currents

Explanation:Convection currents transfer heat from one place to another by mass motion of a fluid such as water, air or molten rock. The heat transfer function of convection currents drives the earth’s ocean currents, atmospheric weather and geology. Convection is different from conduction, which is a transfer of heat between substances in direct contact with each other.

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