Answer:
The acceleration of the box is 0.67 m/s²
Explanation:
Given that,
Mass of box = 30.0 kg
Horizontal force = 230 N
Friction force = 210 N
We need to calculate the acceleration of the box
Using balance equation
Where, F = horizontal force
=frictional force
m= mass of box
a = acceleration
Put the value into the formula
Hence, The acceleration of the box is 0.67 m/s²
Answer:
C) scientist use experiments to test their ideas
In order to solve the problem it is necessary to take into account the concepts related to the moment of inertia, and the center of mass of the object.
Our values are given by:
m = 0.514kg
I = 4.7m (each side)
A) For the case when the axis passes through the midpoints of opposite sidesand lies in the plane of the square. The formula is given by,
B) For the case when the axis passes through the midpoint of one of the sides and is perpendicular to the plane of the square. The formula is given by,
C) For the case when the axis lies in the plane of square f passes through two diagonally opposite particles,
Answer:
Energy transformation is when energy changes from one form to another – like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy. While energy can be transferred or transformed, the total amount of energy does not change – this is called energy conservation.
Explanation:
<span>The answers are the second and fourth choices. Although the majority of Americans during that time, including the President of the United States (McKinley), wanted to avoid war and hoped to settle the Cuban question by peaceful means, a series of events early in 1898 strengthened U.S. feelings against Spain. The first was the publication by Hearst of a stolen letter (the de Lôme letter) that was written by the Spanish minister at Washington, wherein the diplomat expressed contempt for McKinley. This was followed by the sinking of the U.S. battleship Maine in Havana harbor on Feb. 15, 1898, with a loss of 260 men. Although Spanish involvement was not proved, U.S. public opinion was aroused and war sentiment rose. The call of the advocates of war was further strengthened as a result of eyewitness reports by members of the U.S. Congress on the effect of the reconcentrado policy in Cuba.</span><span>
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