A lizard ran 3 meters from his rock to his friend's house. He ran
2 answers:
Answer:
Distance traveled, d = 4.5 meters
Explanation:
It is given that, a lizard ran 3 meters from his rock to his friend's house, distance covered by lizard, d₁ = 3 m
He ran back halfway and stopped, now the distance covered,
We need to find the distance traveled. The overall path covered by an object during its entire journey is called distance covered.
To find the distance covered by the lizard we need to simply add both distances as :
d = 4.5 meters
So, his distance traveled is 4.5 meters. Hence, this is the required solution.
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Answer:
a = 1.41 m/s²
Explanation:
Given that
mass ,m= 41 kg
F₁ = 65 N , θ = 59°
F₂ = 35 N ,θ = 32°
The component of Force F₁
F₁x= F₁cos59° i
F₁x= 65 x cos59° i = 33.47 i
F₁y= - F₁ sin 59° j
F₁y= - 65 x sin 59° j = - 55.71 j
The component of Force F₂
F₂x= F₂ sin 32° i
F₂x= 35 x sin 32° i = 18.54 i
F₂y= F₂ cos 32° j
F₂y= 35 x cos 32° j = 29.68 j
The total force F
F= 33.47 i + 18.54 i - 55.71 j + 29.68 j
F= 52.01 i - 26.03 j
The magnitude of the force F
F=58.16 N
We know that
F= m a
a= Acceleration
m=mass
58.16 = 41 x a
a = 1.41 m/s²
Answer:
The thickness of the foil is 0.017 mm.
Explanation:
Given that,
Weight = 7.5 oz = 212.6175 gm
Density = 2.70 g/cm³
Area of aluminium = 50 ft² = 46451.52 cm²
We need to calculate the thickness of the foil
Using formula of density
Where, A = area
t = thickness
m = mass
Put the value into the formula
Hence, The thickness of the foil is 0.017 mm.