Answer: the answer is a
Explanation:
Which of the following is NOT a characteristic of noble gases? *
very reactive
colorless
odorless
unreactive
Helppp
In Static Electricity, The charges do not ____
Answer:
basically I will tell you the definition
Explanation:
so when charges are unbalanced statistic energy is formed positive attract negative and negative attracts positive like repell while unlike attract .
who was the first president of America
Answer:George Washington
Explanation:On April 30, 1789, George Washington, standing on the balcony of Federal Hall on Wall Street in New York, took his oath of office as the first President of the United States.
Answer:
George Washington
Explanation:
Hope this helps out
Plz help its due in in 15 mins
Answer:
Alpha radiation is a kinda massive type of radiation, this would mean that alpha radiation is weakly penetrating. Because of this:
a) When we have particles of smoke in the path of the alpha radiation, the smoke will "stop" a big part of the radiation, and when the detector stops detecting the radiation, it will let the alarm go off.
b) The radiation of alpha particles can be harmful, yes, but the smoke detector is shielded (Again, alpha radiation is weakly penetrating, then shielding the smoke detector is an easy task), this means that the radiation can not get out of the smoke detector, then it is not a problem for the people living near it.
Heat is conducted in the axial direction through a cylinder by heating one end. If the diameter of the cylinder is doubled (but the cylinder material, cylinder length, and the temperatures at both ends of the cylinder are unchanged), how will the heat transfer rate be changed
Answer:
hello your question is incomplete attached below is the complete question with the options
answer : Doubling the Diameter increases the heat transfer rate by a factor of 4 ( B )
Explanation:
The heat transfer in the axial direction of the cylinder can be calculated/determined as attached below
[tex]\frac{q_{2} }{q_{1} } = \frac{(2D)^2}{D^2}[/tex]
[tex]q_{2}[/tex] = 4[tex]q_{1}[/tex] ( This shows that Doubling the diameter increases the heat transfer rate by a factor of 4 )
*Astronomy not physics
How long does it take a message to travel from Earth at Pluto at its average distance from Earth (about 5.9
billion km)?
what is physical quantity
A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit.
Answer:
a property of a material or system that can be quantified by measurement
have a nice day!!!
A ball is thrown horizontally from the top of a 73.9-m building and lands 183 m from the base of the building. Ignore air resistance. How long is the ball in the air
Answer:
t = 3.88 seconds
Explanation:
Given that,
A ball is thrown horizontally from the top of a 73.9-m building and lands 183 m from the base of the building.
We need to find the time for which the ball is in air. Let the time be t.
[tex]y=y_o+ut+\dfrac{1}{2}at^2[/tex]
Here, a = -g, [tex]y_o=73.9\ m[/tex] and y = 0
u is initial velocity, u = 0
[tex]y_o=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2y_o}{g}}\\\\t=\sqrt{\dfrac{2\times 73.9}{9.8}}\\\\t=3.88\ s[/tex]
So, the ball is in the air for 3.88 seconds.
