Answer:
8.66 nano seconds
Explanation:
speed of k mesons ( v ) = c 
m/s
Distance between counters ( d ) = 9.00 m
number of countable electrical pulses = 1000 counts in first counter and 250 in second counter
time of travel = d / v = 18 / 
secs
Next write the decay of particles in lab frame
finally calculate the half life of Meson in its own frame
( t 1/2) of meson in its own frame = 8.66 n-secs
attached below is a detailed solution
<span>1. </span><span>Name 6 processes that are often
involved in scientific inquiry.
Scientific inquiry refers to an activity of a certain person in where he or she
needs to study a certain thing to be able to get knowledge and understand the
scientific ideas of it on how scientists study it.
Here are the 6 process that are usually involved:
=> asking questions
=> Doing research
=> Make a Hypothesis
=> Testing the hypothesis through experiments
=> analyzing the data and draw a conclusion
=> show your result.</span>
Answer:
Option B. N2(g) + 3H2(g) → 2NH3(g)
Explanation:
When nitrogen react with hydrogen, they form a product as shown below:
N2+ H2 → NH3
We need to balance the equation. This is illustrated below:
There are 2 atoms of nitrogen on the left side and 1 atom on the right side. To balance it, put 2 in front of NH3 as shown below:
N2+ H2 → 2NH3
Now, There are a total of 6 atoms of Hydrogen on the right side and 2 atoms on the left side side. This can be balanced by putting 3 in front of H2 as shown below:
N2+ 3H2 → 2NH3
Now we see clearly that the equation is balanced as we have equal numbers of atoms of N and H on both sides of the equation
Answer:
Linear and rotational Kinetic Energy + Gravitational potential energy
Explanation:
The ball rolls off a tall roof and starts falling.
Let us first consider the potential energy or more specifically gravitational potential energy (
; 
= mass of the ball, 
= acceleration due to gravity, 
= height of the roof). This energy comes because someone or something had to do work to take the ball to the top of the roof against the force of gravity. The potential energy is naturally maximum at the top and minimum when the ball finally reaches the ground.
Now, the ball starts to roll and falls off the roof. It shall continue rotating because of inertia (Newton's first law). This contributes to the rotational kinetic energy (
; 
=moment of inertia of the ball & 
= angular velocity).
Finally comes the linear kinetic energy or simply, kinetic energy (
) which is caused due to the velocity 
of the ball.
