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2 years ago

This is a measure of quantity of matter

Physics

1 answer:

Marrrta [24]2 years ago

3 0

Answer:

Mass

Explanation:

Mass is the measure of amount of matter contained within any substance and hence mass determines the weight. Unit of mass is kilogram as per ISI system of units.

Mass is measured through a balance. The more is the mass of an object, the more the balance tilts towards the object side.

Weight is equal to product of mass and the gravitational constant i.e 9.8m/s^2

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This graph shows the energy of a reaction over time. Which statement is

kirill115 [55]

Answer: D.

Explanation: Just took the quiz.

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2 years ago

Read 2 more answers

A lamp is connected to the power supply.

Vika [28.1K]

Answer:

There are 45 turns in the secondary coil.

Explanation:

Given that,

Input potential of the lamp, $V_{in}=5\ V$

The output potential of the lamp, $V_{out}=1.5\ V$

Number of turns in primary coil, $N_P=150$

We need to find the number of turns needed on the secondary coil. We know that the ratio for a transformer is as follows :

$\dfrac{V_{out}}{V_{in}}=\dfrac{N_s}{N_P}\\\\N_s=\dfrac{V_{out}N_P}{V_{in}}\\\\N_s=\dfrac{1.5\times 150}{5}\\\\N_s=45\$

So, there are 45 turns in the secondary coil.

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2 years ago

Which of these best explains the ability of small insects to walk on the surface of still water?

Furkat [3]

Well, the surface of still water has surface tension. If there isn't enough mass or weight to break the surface tension, the object will float.

7 0

3 years ago

0.22 L of pancake syrup has a mass of 33 g.

katrin2010 [14]

Answer:

a. 150 g/L

b. 75 g

c. 120 mL

Explanation:

a. 33g/0.22L=150 g/L

b. 33g/0.22L=150 g/L

150 g/L*0.5L=75g

c. 0.22L/33g=0.006667L/g

0.006667L/g*18g=0.12L

0.12L*1000=120mL

6 0

2 years ago

A 1.50x103-kilogram car is traveling east at 30 meters per second.

frez [133]

Answer:

$39000\ \text{kg m/s}$

West

Explanation:

m = Mass of car = $1.3\times 10^{3}\ \text{kg}$

t = Time = 9 seconds

u = Initial velocity = 30 m/s

v = Final velocity = 0

Impulse is given by

$J=m(v-u)\\\Rightarrow J=1.3\times 10^3(0-30)\\\Rightarrow J=-39000\ \text{kg m/s}$

The magnitude of the total impulse applied to the car to bring it to rest is $39000\ \text{kg m/s}$ .

The direction is towards west as the sign is negative.

7 0

2 years ago