1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
exis [7]
3 years ago
15

Krishna wants to measure the mass and volume of a key. Which tools should she use?

Physics
1 answer:
Andrei [34K]3 years ago
8 0

Answer:

a balance and a beaker of water

Explanation:

The mass can easily be measured with balance. If you drop the key in a beaker of water, the water inside the beaker will increase and this increases the volume of water that will be equal to volume of key.

You might be interested in
What is the trend noticed with the inner planets
lutik1710 [3]
The inner planets are closer to the Sun and are smaller and rockier. ... The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars.Apr 23, 2014
7 0
3 years ago
Dave and Alex push on opposite ends of a car that has a mass of 875 kg. Dave pushes the car to the right with a force of 250 N,
White raven [17]

The net force acting on the car is 65 N to the left

The net force acting on an object is simply defined as the resultant force acting on the object.

From the question given, we obtained the following data:

  • Force applied to the right (Fᵣ) = 250 N
  • Force applied to the left (Fₗ) = 315 N
  • Net force (Fₙ) =?

The net force acting on the car can be obtained as follow:

Fₙ = Fₗ – Fᵣ

Fₙ = 315 – 250

<h3>Fₙ = 65 N to the left </h3>

Therefore, the net force acting on the car is 65 N to the left

Learn more on net force: brainly.com/question/19549734

8 0
2 years ago
Read 2 more answers
Which of the following statements are true?a. Earth's geographic south pole is also a magnetic south pole. b. Scientists have ev
ANTONII [103]

Answer:

c, d, and f.

Explanation:

Let us look at each of the statements one at a time:

a. Earth's geographic south pole is also a magnetic south pole.

This is not true. Earths magnetic south pole is slightly off (2,860 km away) from earth's geographical south pole.

b. Scientists have evidence that single isolated magnetic poles, called magnetic monopoles, exist.

Nope. So far no evidence yet exists that hypothetical magnetic monopoles exist.

c. The north pole of a bar magnet will attract the south pole of another bar magnet.

True, since opposite ends of a magnet attract and like ends repel.

d. The south poles of two bar magnets will repel each other.

Also true since like poles of a magnetic repel each other.

e. The north poles of two bar magnets will attract each other.

No, the north poles of two magnets will repel each other since they have the same polarity.

f. Earth's geographic north pole is actually a magnetic south pole.

Yes. If you call the point of the needle that points north the north pole of the compass,<em> then it points north because it is attracted to the south pole of earth's magnetic field.</em> (like repel opposites attract)

8 0
3 years ago
PLEASE HELP!!!!
Aleks [24]
The answer is step by step 65
4 0
2 years ago
Read 2 more answers
The addition of 9.0×105 J is required to convert a block of ice at -10 ∘C to water at 11 ∘C. i need help this is due in less tha
Law Incorporation [45]

The mass of the block of ice is 2.24 kg

Explanation:

The amount of heat needed for the whole process consists of three different amounts of heat:

Q_1: the amount of heat needed to raise the temperature of the block of ice from -10^{\circ}C to 0^{\circ}C

Q_2: the amount of heat needed to melt the block of ice at melting point

Q_3: the amount of heat needed to raise the temperature of the water from 0^{\circ}C to 11^{\circ}C

The total amount of heat needed can be written as

Q=Q_1+Q_2+Q_3=mC_i\Delta T_1 + m\lambda_f + mC_w\Delta T_3

where we have:

Q=9.0 \cdot 10^5 J (total amount of heat required)

m is the mass of the block of ice

C_i = 2108 J/kg^{\circ}C is the specific heat of ice

\lambda_f=3.34\cdot 10^5 J/kg is the latent heat of fusion of ice

C_w=4186 J/kg^{\circ}C is the specific heat capacity of water

\Delta T_1 = 0-(-10)=10^{\circ}C is the change in temperature in the 1st process

\Delta T_3 = 11-0=11^{\circ}C is the change in temperature in the 3rd process

Solving the equation for m, we find the mass of the block of ice:

m=\frac{Q}{C_i\Delta T_1 + \lambda_f+C_w\Delta T_3}=\frac{9.0\cdot 10^5}{(2108)(10)+3.34\cdot 10^5+(4186)(11)}=2.24 kg

Learn more about specific heat capacity:

brainly.com/question/3032746

brainly.com/question/4759369

#LearnwithBrainly

8 0
3 years ago
Other questions:
  • A battery establishes a voltage V on a parallel-plate capacitor. After the battery is disconnected, the distance between the pla
    8·1 answer
  • When a ball is thrown straight up with no air Resistance, the acceleration is in what direction ?
    9·1 answer
  • Someone who wants to sell you a Superball claims that it will bounce to a height greater than the height from which it is droppe
    6·1 answer
  • Driving along in your car, you take your foot off the gas, and your speedometer shows a reduction in speed. Describe an inertial
    15·1 answer
  • A ball of mass 6 kg is moving to the right with a velocity of 4 m/s when it strikes a 12 kg green block moving to the left at 5
    7·1 answer
  • Which answer is right? thanks if u help me! :)
    13·2 answers
  • Goals can be big or small? Question 1 options: True False
    12·1 answer
  • A drawback of burning biomass to produce electricity is that it is ___.
    13·1 answer
  • A 10.0-kg mass is placed on a 25.0o incline and friction keeps it from sliding. The coefficient of static friction in this case
    9·1 answer
  • All stars go through a lifecycle.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!