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4 years ago

Can you name some people who have shown perseverance?

Physics

1 answer:

Komok [63]4 years ago

6 0

Answer:

Milton Hershey

Steve Jobs

Simon Cowell

Thomas Edison

Explanation:

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If Q = 16 nC, a = 3.0 m, and b = 4.0 m, what is the magnitude of the electric field at point P?

Lynna [10]

In BPC

tan\theta =a/b = 3/4

\theta = tan^-1(0.75)

\theta = 36.87 deg

BP = sqrt(a^2 + b^2) = sqrt((3)^2 + (4)^2) = 5 m

Eb = k Q/BP^2 = (9 x 10^9) (16 x 10^-9)/5^2 = 5.76 N/C

Ea = k Q/AP^2 = (9 x 10^9) (16 x 10^-9)/4^2 = 9 N/C

Ec = k Q/CP^2 = (9 x 10^9) (16 x 10^-9)/3^2 = 16 N/C

Net electric field along X-direction is given as

Ex = Ea + Eb Cos36.87 = (9) + (5.76) Cos36.87 = 13.6 N/C

Net electric field along X-direction is given as

Ey = Ec + Eb Sin36.87 = (16) + (5.76) Sin36.87 = 19.5 N/C

Net electric field is given as

E = sqrt(Ex^2 + Ey^2) = sqrt((13.6)^2 + (19.5)^2) = 23.8 N/C

8 0

3 years ago

What is density? Write a formula by showing the relation of mass density and volume

slava [35]

Answer: below

Explanation: Density, mass of a unit volume of a material substance. The formula for density is d = M/V, where d is density, M is mass, and V is volume

7 0

3 years ago

Define 1 second time

malfutka [58]

Answer:

define 1 second time

One second is the time that elapses during 9,192,631,770 (9.192631770 x 10 9 ) cycles of the radiation produced by the transition between two levels of the cesium 133 atom. ... One second is equal to 1/86,400 of a mean solar day.

7 0

3 years ago

Read 2 more answers

an 80.0 kg astronaut carrying a 15.0 kg tool kit is drifting away from the space station at a speed of 1.25 m/s. a) if she throw

jasenka [17]

The final speed of the astronaut at the space station is 0.36 m/s and the direction will be opposite to the direction of the tool kit thrown.

The mass of the astronaut = 80 kg

The mass of the tool kit = 15 kg

The speed of the space station = 1.25 m/s

The speed of the tool kit threw = 6 m/s

The final speed of the astronaut can be found using the conservation of momentum formula,

$\displaystyle m_{1}v_{f1} + m_{2}v_{f2} = m_{1}v_{i1} + m_{2}v_{i2}$

where m₁ is the mass of the astronaut

m₂ is the mass of the tool kit

$\displaystyle v_{i1}$ and $\displaystyle v_{i2}$ is the speed of the space station

$\displaystyle v_{f1}$ is the speed of the astronaut after throwing the toolkit

Let us substitute the known values in the above equation, we get

(80 x $\displaystyle v_{f1}$ ) + (15 x 6) = (80 x 1.25) + (15 x 1.25)

(80 x $\displaystyle v_{f1}$ ) + 90 = 100 + 18.75

80 x $\displaystyle v_{f1}$ = 118.75 - 90

80 x $\displaystyle v_{f1}$ = 28.75

$\displaystyle v_{f1}$ = 28.75 / 80

= 0.36 m/s

Therefore, the final speed of the astronaut is 0.36 m/s

By newton's third law, for every action, there will be an equal and opposite reaction. Thus, the direction of the astronaut's direction will be against the direction of the tool kit thrown.

Learn more about the conservation of momentum in

brainly.com/question/2456421

#SPJ4

5 0

1 year ago

Accommodation of the eye refers to its ability to __________. see on both the brightest days and in the dimmest light see both i

Elena-2011 [213]

Answer:

to adjust from distant to the near objects

Explanation:

The process of accommodation is achieved by changing in the shape and position of the eye ball. Just like adjusting the lens of the camera.

6 0

3 years ago

Read 2 more answers

Can you name some people who have shown perseverance?​

Can you name some people who have shown perseverance?