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aliina [53]
3 years ago
11

A three-toed sloth travels eastward across a tree limb at 0.11 km/hr. After 30.0 minutes, what is the displacement of the sloth?

Physics
2 answers:
ozzi3 years ago
7 0

Answer:

55 m eastward

Explanation:

The relationship between velocity, displacement and time is:

v=\frac{d}{t}

where v is the velocity, d the displacement and t the time.

In this problem, we know:

- v=0.11 km/h eastward is the velocity of the sloth

- t=30.0 min = 0.5 h is the time of the motion

Therefore, we can find the displacement of the sloth by re-arranging the previous formula:

d=vt=(0.11 km/h)(0.5 h)=0.055 km = 55 m

and the direction is the same as the velocity (eastward).

babunello [35]3 years ago
3 0
Displacement is the total distance from the start point, so what you want to say is that in total, <span>If he moves 0.11 km in 60 minutes (km/h) then in 30 minutes he simply moved 0.055 km (half of 0.11 km) </span>
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Answer:

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Explanation:

The total surface area of the semi-spherical bowl can be decomposed in three different sections: 1) an outer semi-sphere of radius 12 cm, 2) an inner semi-sphere of radius 10 cm, and 3) the edge, which is a 2-dimensional ring with internal radius of 10 cm and external radius of 12 cm. We will compute the areas independently and then sum them all.

a) Outer semi-sphere:

A1 = 2*pi*r² = 2*pi*(12 cm)² = 288*pi cm² = 904.78 cm²

b) Inner semi-sphere:

A2 = 2*pi*(10 cm)² = 200*pi cm² = 628.32 cm²

c) Edge (Ring):

A3 = pi*(r1² - r2²) = pi*((12 cm)²-(10 cm)²) = pi*(144-100) cm² = 44*pi cm² = 138.23 cm²

Therefore, the total surface area of the bowl is given by:

A = A1 + A2 + A3 = 288*pi cm² + 200*pi cm² + 44*pi cm² = 532*pi cm² (approximately 1665.33 cm²)

Changing units to m², as required in the problem, we get:

A = 532*pi cm² * (1 m² / 10, 000 cm²) = 0.0532*pi m² (approximately 0.166533 m²)

5 0
3 years ago
A man is standing on the shore of a beach, up to his knees in water. Every second two waves hit him. What is the frequency of th
laila [671]

Answer:

f = 2 Hz

Explanation:

The frequency of a wave is defined as the no. of waves passing per unit of time. Therefore, the frequency of a wave can be calculated by the following formula:

f = \frac{n}{t}

where,

f = frequency of the wave = ?

t = time passed = 1 s

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2 years ago
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kykrilka [37]

Answer:

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3 years ago
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2 years ago
A child throws a ball vertically upward to a friend on a balcony 28 m above him. The friend misses the ball on its upward flight
photoshop1234 [79]

Answer:

t=1.9 sec

Explanation:

From the question we are told that:

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 t=\frac{28.03-5.35}{9.8}

 t=1.9 sec

4 0
2 years ago
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