Help me solve these two questions please!
1 answer:
You might be interested in
<h3>Given:</h3>
- Trapezium
- Length of BC
- Value of "x"
We can divide the given shape into a triangle and a rectangle.
We'll have to use Pythagoras Theorem.
In this question we have to find the hypotenuse so we'll have to add.
Let's substitute the values according to the formula.
Now, we can find the value of "x"
- Adjacent= 7 cm
- Opposite= 6 cm
- Hypotenuse= 9.22 cm
We can use any one from SOHCAHTOA.
Here I'm using tan.
Let's substitute the values according to the formula.
We'll have to use tan inverse.
Answer:
The time it takes for the pendulum to swing from its rightmost position to its leftmost position and back again is 1.25 seconds.
Step-by-step explanation:
Given the equation
-----------Equation 1
where d, in inches of the pendulum of a grandfather clock from the center.
Comparing with the standard equation of an oscillating pendulum bob.
----------Equation 2
where ω = angular velocity
t = time taken
α = The angular displacement when t = 0
Comparing equation 1 and 2,
α = 0
Recall that [/tex]
f = 0.8 Hertz
Recall that
T = 1.25 seconds
Therefore, the time it takes for the pendulum to swing from its rightmost position to its leftmost position and back again is 1.25 seconds.