Answer:
Frequency, f = 0.2 Hz
Explanation:
We have,
A baseball player throws 4 balls every 20 seconds.
It is required to find the frequency of the baseball.
Frequency of an object is defined as the number of times an event occurs. It is given by number of throws per unit time. It can be given by :
So, the frequency of his throw is 0.2 Hz.
Answer:
According to Ohm's law :
Where,
V is the potential difference or voltage.
I is the current flowing in a circuit.
R is the resistance.
The SI unit of potential difference is Volt. It is denoted as V.
The SI unit of current is Ampere. It is denoted as A.
The unit for resistance is :
It is equivalent to Ohm or .
Hence, the correct option is (a) " volt ÷ ampere ".
Answer:
<h2>320</h2>
Just use F =ma where m is mass and a is acc.
Answer:
Angle of ray makes with the vertical is 62.1 degree
Explanation:
As per the ray diagram we know that the angle of incidence on oil brine interface will be given as
now by Snell'a law at that interface we have
now we will have
now this is the angle of incidence for oil air interface
so now again by Snell's law we will have
I believe the right answer choice is letter B