What is the degree measure of angle bac? round to the nearest whole degree. 19° 20° 70° 71°

Answer:

π/10 rads

Explanation:

It takes an hour (60 minutes) for the minute's hand to turn a full circle or achieve an angular rotation of

2πl rad.

Now, number of periods of 3 minutes in an hour is;

Number of periods = 60/3 = 20 periods

Thus, 3 minutes rotation accounts for 1/20 of 2π the rotation of the minute's hand in an hour.

Thus;

Angular displacement = (1/20) * 2π = π/10 rads

Answer:

50 charges

Explanation:

it will deduct and mutiple it self and divide

Answer:

This process is CONDENSATION

Explanation:

Condensation occurs when water vapour loses some of its kinetic energy to a colder body and changes into liquid state.

Explanation:

first change m/s to km/hr and time 1 year to hour b/c we are asked the to give in km. so,

v=17,000 m/s = 17000×3600/1000 = 61,200 km/hr

t= 1 year= 365 days =365day×24 hr/day = 8,760hr

therefore, V = s/t from this s = v×t =61200×8760 =536,112,000 Km

Answer:

235 m/s

Explanation:

v = u + at

where v = final speed,

u = initial speed (10 m/s),

a = acceleration (15 m/s²),

t = time taken (15 s).

Substituting into the formula:

v = 10 + (15 x 15)

v = 10 + 225

v = 235 m/s

The acceleration that the same force will provide if both masses are tied together is; 6.0 m/s².

We are given;

Force; F = 5 N

Acceleration of the first mass, a₁ = 8.0 m/s²

Acceleration of the second mass, a₂ = 24 m/s²

Formula for force is;

F = ma

Let us find both masses; m₁ and m₂.

m₁ = F/a₁

m₂ = F/a₂

Thus;

m₁ = 5/8 kg

m₂ = 5/24 kg

Total mass is; m = m₁ + m₂

m = 5/8 + 5/24

m = 15 + 5/24

m = 20/24 kg

Thus, acceleration if they are both tied together is;

a = F/m

a = 5/(20/24)

a = 6.0 m/s².

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Answer:

light gates are more reliable

Explanation:

when using a manual stop watch it's difficult to stop it at an exact time. light gates able to detect when an object passes through a 'gate' with the infrared transmitter and receiver. (sorry for my explanation)

The magnetic north pole of the earth's magnet is in the geographic south pole.

The magnetic north pole of the earth's magnet is the geographic south pole.

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Answer:

below

Explanation:

1. in front of the mirror

2. convex mirror

3.upright and diminished

4.magnification= image height÷object height

-1.25=i.h÷2

ih=-1.25×2

i.h=-2.5

Answer:

[tex]\fbox {40 V}[/tex]

Explanation:

The formula we apply :

[tex]\boxed {Voltage = Current \times Resistance}[/tex]

At the point 2, current flowing will be 2A and resistance is 20Ω.

Solving :

V = 2 × 20

V = 40 V

It is important to avoid an autoincrement primary key column in a many-to-many junction table.

A many-to-many junction table is a junction table which links multiple data in one table to multiple data in another table.

Generally in a many-to-many junction table, it is important to avoid an autoincrement primary key column.

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Answer:

[tex]\boxed {Density = 4800 kg/m^{3}}[/tex]

Explanation:

Formula :

[tex]\boxed {Density = \frac{Mass (kg)}{Volume (m^{3})}}[/tex]

Convert volume into standard unit :

⇒ 250000 cm³ × 10⁻⁶

⇒ 0.25 × 10⁶ × 10⁻⁶

⇒ 0.25 m³

Solve for density :

⇒ Density = 1200 kg / 0.25 m³

⇒ Density = 1200 × 4 kg/m³

⇒ Density = 4800 kg/m³

Answer:

in the thick part of the scissors ✂️

Explanation:

because in physics simple machine called wedge the force applied in this thick area it have thine side used to split or piece objects

Answer:

Option B) Displacement

a. The voltmeter reads 0.053 volts

b. The electromotive force, emf of the battery is 0. 106 volts

a. Given the current  = 1. 15A

Voltmeter reads the voltage = V

Resistance could be gotten from the diagram = R

V = IR

To find the resistance from the structure

First, find the resistance in parallel

Resistance in parallel = 1/R1 = 1/R2 + 1/R3 = 1/25 + 1/15 + 1/15 = 0. 17 Ohms

Now, find the resistance in series

Resistance in series = R1 + R2 + R3 = 45 + 0. 17 + 10 = 55. 17 Ohms

Finally, the  resistance in parallel = 1/35 + 1/55. 17 = 0. 028 + 0. 018 = 0. 046 Ohms

Substitute values into the equation

V = IR

V = 1. 15 * 0. 046

V = 0. 053 Volts

b. To find the Emf, use the formula

Emf =  V + Ir

Substitute the values into the formula

Emf = 0. 053 + 1.15 * 0.046

Emf  = 0. 053 + 0. 0529

Emf = 0. 106 volts

Therefore, the voltmeter reads 0.053 volts and the electromotive force of the battery us 0. 106 volts

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Answer:

67.5m

Explanation:

Use the kinematics equation.[tex]\frac{vf^2-vo^2}{2a} =x[/tex]

[tex]vf=30[/tex]  [tex]vo=15[/tex] [tex]a=5[/tex]

[tex]\frac{30^2-15^2}{10} =x\\[/tex]

[tex]67.5=x[/tex]

The kind of investigations might have led to our current understanding of matter and energy is research and measurement.

It is important for scientists to use the same scientific method and consistent measurement units in order to get the correct value while analayzing.

The matter has volume and space occupied.

When conceivable the researcher endeavors to test his speculations via painstakingly planned and controlled tests that will yield quantitative instead of subjective outcomes.

Thus, the kind of investigations might have led to our current understanding of matter and energy is research and measurement.

It is important for scientists to use the same scientific method and consistent measurement units in order to get the correct value while analayzing.

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The total angle, in radians, through which a point on the flywheel rotates is 7540 radians

From the question, we are to determine the total angle in radians

Using the formula,

[tex]\omega = \frac{\theta}{t}[/tex]

Where [tex]\omega[/tex] is the angular velocity

[tex]\theta[/tex] is the angle

and t is the time

From the given information,

[tex]\omega = 30 \ rev/s[/tex]

Convert to rad/s

[tex]\omega = 30 \times 2\pi \ rad/s[/tex]

[tex]\omega = 188.496 \ rad/s[/tex]

and t = 40 s

From the formula

[tex]\omega = \frac{\theta}{t}[/tex]

[tex]\theta = \omega t[/tex]

∴ [tex]\theta = 188.496 \times 40[/tex]

θ = 7539.822 rad

θ ≅ 7540 rad

Hence, the total angle, in radians, through which a point on the flywheel rotates is 7540 radians

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Answer:

I think its either A or B. I’m not really sure, don’t listen to me. Read my explanation and it should help you.

Explanation:

When the two conducting spheres are brought together to touch, it is as though they become one single big conductor and the total charge of the two spheres spreads out across the whole surface of the touching spheres. When the spheres are moved apart again, each one is left with half of the total original charge…

X and Y are two identical conducting spheres separated by a distance d. X has a charge of +6µC and Y has a charge of -2µC. The electric force between them is +F (i.e. attractive). The spheres are touched together and are then returned to their original separation d. What is the new value of the force between them? Any help is greatly appreciated. I assumed that since the net charge should remain the same after, there would be no change in the value of the force, but the answer scheme gives the answer as -F/3…

No, Samuel hasn't done work, Since the door doesn't move.

Work is said to be done when an applied force moves an object over a given distance.

W = Fd

where;

Since the door doesn't move, we can conclude that Samuel hasn't done work.

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Answer:

See below

Explanation:

Things generally expand when heated ....so volume increases while mass remains the same .....this will cause the value of density to decrease  

Stars with fairly circular orbits about the galactic center is found in the disk

Stars are one of the astronomical object that is usually very bright.

A circular orbit star is a star that moves in circular direction and not elliptical orbit which is most common to starts.

Therefore, Stars with fairly circular orbits about the galactic center is found in the disk

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Answer:

C.

Explanation:

Bioluminescence is the fascinating natural phenomenon by which living creatures produce light.

Answer:

Correct option is A)

Weight on earth = 600N

Let g= 10m/s2 on earth

Mass on earth = 10600=60 kg

Now, since mass is a constant quantity so, it will remain 60 kg on the moon also.

Now, weight on moon = mg′

m= mass =60 kg

g′ = acc. due to gravity on moon = 61th the value on earth

So, Weight on moon = 61th of the weight on earth 

⇒ Weight on the moon =600×61=100 N

The object which follows Newton's first law of motion around me is; my scientific calculator.

The concept which describes objects as forever stationary except acted upon by external forces can be attributed to.the Newton's first law of motion. The postulation of the law is that; An object remains at rest if at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force. Hence, except acted upon by an external force(myself), my calculator will remain at rest.

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The objects around us that obeys newton's first law of motion are

Newton's first law of motion states that every object will continue to be in its state of rest on remain in uniform motion except it is acted upon by an external force.

Newton's first law of motion is also called the law of inertia

Examples of  newton's first law of motion are

etc.

Hence, The objects around us that obeys newton's first law of motion are

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Answer:2140 watts x 6 hours =12.84 kWh. Are you looking for specific type units such as Jules?

Answer:

b

Explanation: