Se fabrica un termómetro utilizando un par termoeléctrico y se verifica que el voltímetro indica 0,4V cuando la temperatura es de 0°C y 2,4V cuando es de 100°C. Suponiendo que el cambio en la tensión eléctrica es directamente proporcional al cambio en la temperatura, calcular cuánto indicará el voltímetro a una temperatura de 40°C.

What is the difference between electrically neutral objects and electrically charged objects

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?