Answer:
h ’= 0.51356 m
Explanation:
For this exercise we can use conservation of energy
starting point. Highest point of the trajectory
Em₀ = m g h
sin θ = h / L
h = L sin θ
Em₀ = m g L sin θ
final point. Lowest point of the trajectory
Em_f = K = ½ mv²
as there is no friction, energy is conserved
Em₀ = Emf
m g L sin θ = ½ m v²
sin θ = ½ v² / gL
sin θ = ½ 3.80² / (9.8 6.60)
sin θ = 0.111626
tea = 6.41
They ask us for the speed for L ’= 4.60 m
let's find the height
sin 6.41 = h '/ L'
h ’= L’ sin 6.41
h ’= 4.60 sin 6.41
h ’= 0.51356 m
we use conservation of energy
m g h ’= ½ m v’2
v ’= √ (2gh’)
v ’= √ (2 9.8 0.51356)
v ’= 3.173 m /s²
Parallax arises due to change in viewpoint occurring due to motion of the observer, of the observed, or of both.
Answer:
Aloe vera is a succulent plant species ( with fleshy water storing tissue) belonging to the genus Aloe.
It is used in many products ( including beverages, cosmetic products as gel, medicinal ointments). Its juice is quite bitter in taste. It is known to be the best skin moisturizer and can be used for healing wounds by enhancing the renewal of damaged cells. It is also used as an anticarcinogen, thus reduces the chances of cancer.
Thus, the given hypothesis can be classified as falsifiable ( which is proven wrong) or non-falsifiable ( which is proven right) in the following way-
Falsifiable-
Aloe vera juice tastes better than carrot juice.
Non Falsifiable-
Aloe vera gel is the best natural skin moisturizer.
Aloe vera gel can heal wounds by boosting cell renewal.
Drinking aloe juice can reduce the risk of lung cancer.
Answer:
Option C
Explanation:
Light is an electromagnetic wave as it has characteristics of both electrical and magnetic waves. It is not a mechanical wave. Water and sound wave are mechanical wave as they need some medium to travel while light do not need any medium to travel.
Hence, option C is correct
Answer:
2.9tons
Explanation:
Note that On an incline of angle a from horizontal, the parallel and perpendicular components of a downward force F are:
parallel ("tangential"): F_t = F sin a
perpendicular ("normal"): F_n = F cos a
At a=3.7 degrees, sin a is about 0.064 and with F = 46tons:
F sin a ~~ (46 tons)*0.064 ~~ 2.9tons
Also see attached file
