Andrew buys books and videos in a store. He uses the expression 4b + 8v to find the cost of what he is buying, where b is the nu
1 answer:
You might be interested in
Answer:
Please red the answer below
Step-by-step explanation:
In order to determine the length of each cable you use the Newton second law for each component of the forces involved in the situation.
For the x component you have:
(1)
T1: tension of the first cable = 1500N
T2: tension of the second cable = 800N
θ1: angle between the horizontal and the first cable
θ2: angle between the horizontal and the first cable
For the y component you have:
(2)
W: weight of the camera = Mg = (140kg)(9.8m/s^2) = 1372N
You can squared both equations (1) and (2) and the sum the two equations:
Then, you sum the equations:
(3)
Next, you use the following identity:
and you obtain in the equation (3):
With this values you can calculate the value of the another angle, by using the equation (1):
Now, you can calculate the length of each cable by using the information about the width of the football field. You use the following trigonometric relation:
d: distance to the right side of the field
By using the cosine law you can fins a system of equation and then you can calculate the values of l1 and l2.
Answer:
4.4 cm
Step-by-step explanation:
To solve this problem, we have to remind the conversion factor between feet and cm. We know that:
1 foot = 12 inches
1 inches = 2.54 cm
So,
In this problem, Sarah's height right now is
h = 148 cm
She wants to be 5 feet tall by her next birthday: it means that her height should be
Therefore, she needs to grow by:
So, she needs to grow 4.4 cm more in order to be 5 feet tall.