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3 years ago

When the temperature of water increases from room temperature to 90C the process of heating the water is...

Physics

2 answers:

ololo11 [35]3 years ago

7 0

Answer:

endothermic

Explanation:

Endothermic processes occur when a system increases in temperature which is usually caused by a heat transfer from its surroundings.

vivado [14]3 years ago

4 0

Answer:

endothermic

Explanation:

Endothermic means that the substance involved in the transformation, in this case water, absorbs heat energy from its surroundings, as a consequence its temperature increases, in this case water temperature increases from room temperature to 90°C.

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If the distance between objects is the same for each pair, which of the following have the greatest gravitational force between

tamaranim1 [39]

Answer:

Explanation:

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3 years ago

The magnetic field of a straight, current-carrying wire is:

frutty [35]

Conductive current is the answer I d k

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2 years ago

Railroad tracks appear to converge in the distance. This provides a cue for depth perception known as _____. Please type the cor

evablogger [386]

Answer:

linear perspective

Explanation:

Railroad tracks appear to converge due to our field of view. When an object is far away it seems smaller that means there is angle that subtends from our line of sight this results in the illusion of railroad tracks converging.

Railroad tracks converging activates the linear perspective of our vision. Linear perspective is a technique used to convey a sense of depth in two dimensional representation of an object. The lines at an angle give us a sense of depth otherwise straight lines will not be able to convey depth.

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2 years ago

With what minimum speed must athlete leave the ground in order to lift his center of mass 1.80 m and cross the bar with a speed

tatiyna

Answer:

The minimum velocity is V=5.98[m/s]

Explanation:

In this problem the athlete jumps by printing a force to raise his mass at an initial speed, which we must determine. These two initial amounts of energy that we have, the kinetic energy (velocity with which it jumps) and the work done (mass of the athlete by the jumped distance) must be equal to the kinetic energy when its velocity is equal to 0.65[m/s]. By raising this equation, the initial speed can be cleared.

We have to keep in mind that the weight is acting down and the movement is one up so the work done by the force is negative

Therefore we have:

$Ek1+W=Ek2\\where\\Ek1= initial kinetic energy\\W= work done\\Ek2=final kinetic energy$

$\frac{1}{2} *m*v_{0} ^{2} - (m*g*h)=\frac{1}{2} *m*v_{f} ^{2} \\$

Reorganizing each of the members of the equation and clearing the final velocity.

$v_{0} =\sqrt{(v_{f})^{2} +2*g*h} \\v_{0} =\sqrt{(0.65)^{2} +2*9.81*1.8} \\v_{0} =5.98[m/s)$

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2 years ago

Diffrences between weak nuclear force and electromagnetic force

Aleonysh [2.5K]

The nuclear forces are very short range whereas the electromagnetic force has a long range.

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3 years ago