Science

How to Questions and Answers About Science

Why when put in the sun will cyan scissors be warmer then yellow scissors?

Why when put in the sun will cyan scissors be warmer then yellow scissors?

What is the rotational speed of the earth?

What is the rotational speed of the earth?

Help please, Acid rain formation?

How do i write a balanced chemical equation for the formation of an acid when each of the following compounds dissolve in water? For nitrogen dioxide and sulfur dioxde

using the particle theory to explain how a clinical thermometer works?

using the particle theory to explain how a clinical thermometer works?

Why is my doctor acting so weird?

Yesterday I got a letter from my medical doctor refering me to another doctor. The reason mentioned in the letter that he is moving out of town is not true. he acts different every time i see him: one time he tells me tht the shoes i am wearing are not appropriate for the actual…

How to determine the catapult launching angle?

This is my catapult, the launching angle in its original form( sits on the ground) is less than 90°(although the arm hits the stopping bar at an 90° .However, i observed that the path of the table tennis ball is a parabola shape. That means the ball is launched at an angle and not 90°):…

Projectile Motion Physics Q?

Romeo throws a gift to Juliet from his hand 1.5m above the ground at an angle of 75 degrees to the horizontal. On his third attempt he just manages to get the gift to go over the parapet of the balcony which is 1.2m high. At what approximate speed does he need to throw the…

Quadratic equation help ?!!?

28a^2 – 7a^4 = 0 m^2 – 4m – 45 = 0 Please show how you got the answers. Thanks!