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3 years ago

PLEASE HELP!!!! WILL GIVE BRAINLIEST!!! WORTH 20 PTS!!!!!

Physics

1 answer:

Leona [35]3 years ago

6 0

Answer:

Explanation:

These tectonic plates rest upon the convecting mantle, which causes them to move. The movements of these plates can account for noticeable geologic events such as earthquakes, volcanic eruptions, and more subtle yet sublime events, like the building of mountains.

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a bicycle uniformly from rest at time t the velocity of the bicycle is v at what time will the bicycle have a velocity of 4v

sesenic [268]

Here

Acceleration and initial velocities are constant.

According to first equation of kinematics.

$\\ \sf\longmapsto v=u+at$

$\\ \sf\longmapsto v=0+at$

$\\ \sf\longmapsto v=at$

$\\ \sf\longmapsto v\propto t$

Time was t at velocity v
Time will be 4t at velocity 4v

7 0

2 years ago

You have to travel 5000 meters. You only have two minutes (120 seconds) to get there. How fast must you travel to get there in t

Sholpan [36]

Answer:

416.667 m/s

Explanation:

divide the distance by the time

8 0

3 years ago

What type of energy is thermal energy?

BigorU [14]

Thermal energy is an example of kinetic energy , due to motion of particles .

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3 years ago

A particle moves so that its position as a function of time in SI units is r = i + (3.0) t2 j + t k. Write expressions for its v

maksim [4K]

Answer:

i - component of V is zero for any value of t i-e no motion in this direction

Explanation:

Since

r= i+3 $t^{2}$ j+t k

==> V = $\frac{d r}{dt}$ = $\frac{d(i+3t^{2}j+kt) }{dt}$

= $6tj+k$

and acceleration is given by taking derivative of velocity w.r.t t

==> a= $\frac{dV}{dt}$ = $\frac{d(6tj+k)}{dt}$ = $6j$

so, V=0i+6tj+k

and

a = 0i+6j+k

i - component of V is zero for any value of t i-e no motion in this direction

6 0

2 years ago

Resistors and reactors, for use over 600 volts, shall not be installed in close enough proximity to combustible materials to con

suter [353]

Resistors and reactors, for use over 600 volts, shall not be installed in close enough proximity to combustible materials to constitute a fire hazard and shall have a clearance of not less than<u> 300 mm </u>from combustible materials.

Explanation:

The hazards associated with high power industrial resistors are primarily due to their open construction, which is necessary for cooling.
The exposed conductors which make up the resistors can be not only a shock hazard but also a thermal burn hazard.
When a resistor fails, it either goes open or the resistance increases. When the resistance increases, it can burn the board, or burn itself up.
Avoid touching non-flammable resistors in operation; the surface temperature ranges from approximately 350 °C to 400°C when utilized at the full rated value. Maintaining a surface temperature of 200°C or less will extend resistors service life.
Do not apply power to a circuit while measuring resistance. When you are finished using an ohmmeter, switch it to the OFF position if one is provided and remove the leads from the meter.
Always adjust the ohmmeter for 0 (or in shunt ohmmeter) after you change ranges before making the resistance measurement.

4 0

3 years ago