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3 years ago

If the net force acting on an object is 0 N the forces are

2 answers:

8 0

If the net force acting on an object is zero, then there may be no forces at all acting on it. If there ARE any, then they're balanced.

elena-s [515]3 years ago

7 0

Its B) unbalanced because i have the same sentence on a quiz in Lesson 5: Friction and Gravity in science. So if its wrong im sorry i tried to help but if it is right then your welcome! :D

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The pressure in a section of horizontal pipe with a diameter of 2.5 cm is 139 kPa. Water ï¬ows through the pipe at 2.9 L/s. If t

My name is Ann [436]

Answer:

d = 2*0.87 = 1.75 cm

Explanation:

by using flow rate equation to determine the speed in larger pipe

$\phi =\pi r^2 v$

$v = \frac{\phi}{\pi r^2}$

$= \frac{2900 cm^3/s}{3.14(1.25cm)^2}$

= 591.10 cm/s

= 5.91 m/s

by Bernoulli's EQUATION

$p1 +\frac{1}{2} \rho v1^2 = p2 +\frac{1}{2} \rho v2^2$

$139000+ \frac{1}{2}*1000*5.91^2 = 101000 +\frac{1}{2}*1000* v2^2$

solving for v2

v2 = 10.53 m/s

diameter can be determine by using flow rate equation

$q = v \pi r^2$

$r^2 = \frac{q}{\pi v}$

$= \frac{2900}{3.14*1053}$

r = 0.87 cm

d = 2*0.87 = 1.75 cm

5 0

3 years ago

In a Young's double-slit experiment, light of wavelength 500 nm illuminates two slits which are separated by 1 mm. The separatio

liubo4ka [24]

Answer:

The value is $y = 0.0025 \ m$

Explanation:

From the question we are told that

The wavelength is $\lambda = 500 \ nm$

The distance of separation is $d = 1\ mm = 0.001 \ m$

The distance from the screen is $D = 5 \ m$

Generally the separation between the adjacent bright fringe is mathematically represented as

$y = \frac{D * \lambda }{ d}$

=> $y = \frac{5 * 500 *10^{-9}}{0.001}$

=> $y = 0.0025 \ m$

3 0

3 years ago

‼️DEADLINE 10:30‼️HELP‼️

sashaice [31]

I forgot the answer

4 0

3 years ago

Which would be most reliable source for information about the toxity of an industrial chemical

amid [387]

For example, a trade secret may be a confidential device, pattern, information, or chemical make-up.Chemical industry trade secrets are generally formulas, process data, or a "specific chemical identity." The latter is the type of trade secret information referred to in the Hazard Communication Standard. The term includes

6 0

3 years ago

Read 2 more answers

If an object is moving, then the magnitude of its ____ cannot be zero.

Bad White [126]

If an object is moving, then its speed and the magnitude
of its velocity aren't zero.

If its velocity is constant (speed doesn't change and it's
moving in a straight line), then its acceleration is zero.

Looks like choice-D sums it up nicely.

7 0

3 years ago