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stira [4]
3 years ago
13

Given a force of 100 N and an acceleration of 10 m/s2, what is the mass?

Physics
1 answer:
Drupady [299]3 years ago
5 0
F=ma, so 100=m×10. Solve for m by dividing by 10. The mass is 10 kg.
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A school bus takes 0.690 h to reach the school from your house. If the average velocity of the bus is 18.7 km/h to the East, wha
Dennis_Churaev [7]

The displacement is 12.903 km east.

4 0
3 years ago
An athlete ran a distance of 100 meters in 9.83 Seconds<br> What’s his average speed
trasher [3.6K]

Answer:

10.1729399797mp/s

Explanation:

100m divided by 9.83s=

10.1729399797mp/s

6 0
3 years ago
A car is driven 13 mi east and then certain distance due north, ending up at the position 25 degrees north of east of its initia
Kobotan [32]

Answer: Hello mate!

lets define the north as the y-axis and east as the x-axis.

Using the notation (x,y) we can define the initial position of the car as (0,0)

then the car travells 13 mi east, so now the position is (13,0)

then the car travels Y miles to the north, so the position now is (13, Y)

and we know that the final position is 25° degrees north of east of the initial position. This angle says that the distance traveled to the north is less than 13 mi because this angle is closer to the x-axis (or east in this case).

This angle is measured from east to north, then the adjacent cathetus is on the x-axis, in this case, 13mi

And we want to find the distance Y, so we can use the tangent:

Tan(25°) = Y/13  

tan(25°)*13 mi = Y = 6.06 mi.

3 0
3 years ago
The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actu
Juliette [100K]

\orange{\underline{\huge{\bold{\textit{\green{\bf{QUESTION}}}}}}}

The apparent depth of an object at the bottom of a tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?

{\bold{\blue{GIVEN}}}

REFRACTIVE INDEX = 1.3

APPARENT DEPTH = 7.7 cm

{ \bold{\green{To  \: Find}}}

REAL DEPTH OF THE OBJECT.

{\red{FORMULA   \:  \: USED }}

Reflective  \:  Index  =  \frac{Real \:  Depth}{Apparent  \: Depth }

\huge\mathbb{\red A \pink{N}\purple{S} \blue{W} \orange{ER}}

Refractive Index = 1.3

Apparent Depth = 7.7 cm

Putting the values in the formula:-

Reflective  \:  Index  =  \frac{Real \:  Depth}{Apparent  \: Depth }  \\  \\ 1.3 =  \frac{Real \:  Depth}{7.7 \: cm}  \\ \\  1.3 \times 7.7 = Real \:  Depth \\  \\ 10.01 \:  \: cm = Real \:  Depth

3 0
2 years ago
A circular loop of flexible iron wire has an initial circumference of 167 cm, but its circumference is decreasing at a constant
Kisachek [45]

Answer:

Part a)

EMF = 5.6 \times 10^{-3} V

Part b)

Since the radius is decreasing so induced current will increase the flux through the coil

So it would be clockwise in direction

Explanation:

As we know that magnetic flux linked with the coil is given as

\phi = \pi r^2 B

now the rate of change in flux is given as

\frac{d\phi}{dt} = 2\pi r \frac{dr}{dt} B

now we know that circumference is decreasing at rate of 15 cm/s

so here we know the length of circumference as

C = 2\pi r

So rate of change in circumference is

\frac{dC}{dt} = 2\pi \frac{dr}{dt}

\frac{1}{2\pi}(15 cm) = \frac{dr}{dt}

final length of circumference at t = 8 s

C = 167 - (15)(8) = 47

Part a)

Now the induced EMF is given as

EMF = (2\pi r)(\frac{1}{2\pi})(0.15)(0.5)

EMF = (0.47)(\frac{1}{2\pi})(0.15)(0.5)

EMF = 5.6 \times 10^{-3} V

Part b)

Since the radius is decreasing so induced current will increase the flux through the coil

So it would be clockwise in direction

5 0
3 years ago
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