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3 years ago

Which describes a positive or negative net force acting on an object? Check all that apply.

2 answers:

6 0

I think the correct answers are it can cause an object to accelerate, it can cause an object to start moving and it <span>can cause an object to change directions. A net force that is positive or negative would make an object move or change direction. Hope this helps.</span>

Anvisha [2.4K]3 years ago

5 0

Answer:

It can cause an object to accelerate.

It can cause an object to stop moving.

It can cause an object to start moving.

It can cause an object to change directions.

Explanation:

When the velocity of an object is increased in the same direction, the object is said to have positive acceleration. If it increases its velocity in a direction that is opposite to the original direction, it is negative acceleration.

When an object that's already moving is made to stop, it is said to have decelerated. Deceleration is negative acceleration.

When an object at rest is made to move by applying a force, it is said to have accelerated to some final velocity, during its motion for some duration.

An object at rest will remain at rest is said to have no net force acting on it.

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Consider a metal single crystal oriented such that the normal to the slip plane and slip direction are at angles of 60° and 35°,

Vedmedyk [2.9K]

Answer:

19.5324 MPa

Explanation:

Information provided

Angle between the normal to the slip plane with tensile axis, $\alpha=60^{o}
$

Angle by slip direction with tensile axis, $\beta=35^{o}$

Critical resolved shear stress, $\tau_{c}=8 MPa$

Applied stress $\sigma=12 MPa$

Shear stress at slip plane

$\tau=\sigma cos\alpha cos\beta$

$\tau=12cos60^{o}cos35^{o}=4.915 MPa$

$\tau$ hence crystal won’t yield

Applied stress, $\sigma$ for crystal to yield is given by

$\sigma=\frac {\tau_{c}}{cos\alpha cos\beta}$

$\sigma=\frac {8}{cos60cos35}=19.53239342 MPa$

$\sigma=19.5324 MPa
$

7 0

3 years ago

What piece of equipment on a boat is most important in preventing propeller

Dahasolnce [82]

Ignition safety switch
The ignition safety switch, often known as the engine cut-off switch, is the most critical piece of equipment for preventing propeller strike injuries. The purpose of this device is to turn off the boat engine immediately so the propeller will be halted and an accident can be avoided.

8 0

3 years ago

this is an area where two tectonic plates move towards each other with one going under the other plate?

Doss [256]

Answer:Convergent boundaries are areas where plates move toward each other and collide. These are also known as compressional or destructive boundaries. Subduction zones occur where an oceanic plate meets a continental plate and is pushed underneath it. Subduction zones are marked by oceanic trenches.

pLS THANK ME AND VOTE ME BRAINLIEST ME

Explanation:

6 0

3 years ago

The wavelength and energy of a wave are inversely proportional. Based on this, which wave listed would have the LOWEST energy.

spayn [35]

D because it has the lowest wavelength, meaning the wave is the longest. Its crest are more spaced out creating lower energy. The smaller distance between the crests equals the higher the sound. Creating higher energy.

I am 95% sure this is right. Very sorry if it isn't.
Hope it helps. ;3

5 0

4 years ago

Read 2 more answers

Which star does He fusion

ella [17]

The answer shall be helious

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4 years ago