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3 years ago

WORTH 50 POINTS!!! Please help me with questions 1,2,3,4,5,6 and 7 ASAP!

Physics

1 answer:

boyakko [2]3 years ago

6 0

This is a good example of unit conversion. Look at the units you have and the units you need to solve for.

In #1 you’re given weight in units N and area in units cm². You want to find pressure in units Pa (pascals) which is force/area, or N/m². So you just divide the force given by the area given, but be careful because the area is given in cm², whereas pressure is in m². Before you calculate pressure, make sure you convert 324cm² into m²

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A car travels 460km in 7 hours. How would you calculate the speed?

NemiM [27]

Answer:

speed = 65.7 km/h

Explanation:

speed = distance over time, so you'd do 460 km/7 hrs to get your speed in km/h

5 0

2 years ago

NEED HELP NOW. I WILL BRAINLIEST

NeTakaya

Answer:

number of Protons=16

number of Neutrons=16

number of electrons=32

Explanation:

Tip:-

Always the number of protons = the number of neutrons.

Add them and you will get the number of electrons.

Happy to help

ADD ME BRAINLIEST AS YOU SAID

YOUR WELCOME

3 0

2 years ago

A converging lens brings rays of light together at a focal point. the bending of light rays is the result of

disa [49]

The bending of light rays is the result of refraction of light passing through the lens. A converging lens is curved on both sides such that the rays coming out of it come together at a point (converge). The point at which the right rays meet after refraction is called the focal point which is a real in the convex lens.

3 0

3 years ago

Read 2 more answers

A suitcase has a width of 55 cm. Which unit conversation fraction should you use to find the width in inches?

Crank

Answer:

2,54 cm are equal to 1 inch

Explanation:

Doing the conversion:

$55[cm]*\frac{1[inch]}{2,54[cm]} =21,65[inch]$

6 0

2 years ago

Two long parallel wires 40 cm apart are carrying currents of 10 A and 20 A in the opposite direction. What is the magnitude of t

Alex_Xolod [135]

Answer:

The magnitude of the magnetic field halfway between the wires is 3.0 x 10⁻⁵ T.

Explanation:

Given;

distance half way between the parallel wires, r = ¹/₂ (40 cm) = 20 cm = 0.2 m

current carried in opposite direction, I₁ and I₂ = 10 A and 20 A respectively

The magnitude of the magnetic field halfway between the wires can be calculated as;

$B = \frac{\mu _oI_1}{2 \pi r} + \frac{\mu_oI_2}{2\pi r}$

where;

B is magnitude of the magnetic field halfway between the wires

I₁ is current in the first wire

I₂ is current the second wire

μ₀ is permeability of free space

r is distance half way between the wires

$B = \frac{\mu_o I_1}{2\pi r} + \frac{\mu_o I_2}{2\pi r} \\\\B = \frac{\mu_o }{2\pi r} (I_1 +I_2)\\\\B = \frac{4\pi *10^{-7} }{2\pi *0.2} (10 +20) = 3.0 *10^{-5}\ T$

Therefore, the magnitude of the magnetic field halfway between the wires is 3.0 x 10⁻⁵ T.

5 0

3 years ago