Answer:
Geologists use the following tests to distinguish minerals and the rocks they make: hardness, color, streak, luster, cleavage and chemical reaction. A scratch test developed by a German mineralogist Friedrich Mohs in 1822 is used to determine mineral hardness.
In an electrochemical cell, electrons flow from anode to cathode while current flows in the opposite direction.
<h3>What is an electrochemical cell?</h3>
The question is incomplete but it clearly relates to an electrochemical cell so I will answer in a general way. An electrochemical cell consists of a cathode and an anode. The anode is positively charged while the cathode is negatively charged.
We should note that electrons flow from anode to cathode but the flow of current is in the opposite direction. This occurs because the electron is negatively charged.
Learn more about electrochemical cell: brainly.com/question/4592165
Answer:
11 feet
Explanation:
No. of pipes = 4
Length of pipe when connected = 44 feet
So
length of 1 pipe = 44 ÷ 4
= 11 feet
Answer:
The first officials who monitored sporting events are not usually allowed on the field to play.
Answer:
10 m/s²
Explanation:
Near Earth's surface, gravitational acceleration is approximately 9.81 m/s2, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.81 metres per second every second.