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3 years ago

Gelatin has a density of 1.27 g/cm³. if you have a blob of gelatin dessert that fills a 2.0 liter bottle, what is its mass?

2 answers:

7 0

There are 1,000 cm³ in 1 liter, 2,000 cm³ in 2 liters.

Each cm³ of gelatin has 1.27 grams of mass in it.

There are 2,000 cm³ in the whole blob, so the total mass is

(2,000 cm³) · (1.27 g/cm³) = 2,540 grams

or 2.540 kilograms .

Verdich [7]3 years ago

6 0

Density = mass / volume so mass = density x volume

2 litres = 2000cm^3

mass = 1.27 x 2000 = 2540g = 2.54 kg

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The minimum speed of the water must be 3.4 m/s

Explanation:

There are two forces acting on the water in the pail when it is at the top of its circular motion:

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The normal reaction, N also acting downward

Since the water is in circular motion, the net force must be equal to the centripetal force, so:

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r = 1.2 m is the radius of the circle

The water starts to spill out when the normal reaction of the pail becomes zero:

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$v=\sqrt{(9.8)(1.2)}=3.4 m/s$

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3 years ago

Assume you are given an int variable named nElements and a two-dimensional array that has been created and assigned to a2d. Writ

Alex777 [14]

Answer:

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Explanation:

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3 years ago

As an object moves, the distance it travels increases with time. Agree Disagree

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3 years ago

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2 years ago

You are given a vector in the xy plane that has a magnitude of 90.0 units and a y component of -61.0 units. A) Assuming the x co

kvasek [131]

Answer:

A) magnitude = sqrrt(147.1^2 + 61^2) = 159.2 units

B)22.5° (clockwise form -ve X axis)

Explanation:

given vector = V1 = x i - 60 j

magnitude of V1 = 90

x - component can be found out by resultant formula

90^2 = x^2 + (-60)^2

x = 67.08 = 67.1 units (3sf)

FOR THE VECTOR 80 UNITS IN -VE X DIRECTION

The X component is -80-------(1)

The Y component is 0 ---------(2)

For the x- component of new added vector:

(1)----------- x + 67.1 = -80

x = -147.1 = -147.1

For the y- component of new added vector:

(2)---------- y - 61 = 0

y = 61.0 (3sf)

the new added vector is = -147.1 i + 61 j

magnitude = sqrrt(147.1^2 + 61^2) = 159.2 units

direction = arctan (61 / 147.1)

= 22.5° (clockwise form -ve X axis)

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3 years ago