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
Naily [24]
2 years ago
13

Independent practice

Physics
1 answer:
coldgirl [10]2 years ago
4 0

Explanation:

formula: <u>Mass</u>

Density x volume

2a) m=10kg v=0.3m³

10÷0.3=33.3 kg/m

2b) m = 160 kg V=0.1m³

160÷0.1=1600 kg/m

2c) m = 220 kg V = 0.02m³

220÷0.02=11000 kg/m

A wooden post has a volume of 0.025m³ and a mass of 20kg. Calculate its density in kg/m.

density = volume ÷ mass

20÷ 0.025=800 kg/m

Challenge: A rectangular concrete slab is 0.80m long, 0.60 m wide and 0.04m thick. Calculate its volume in m³.

Formula : Length x width x height = Volume

0.80 x 0.60 x 0.04 = 0.0192m³

B) The mass of the concrete slab is 180 kg. Calculate its density in kg/m.

density = volume ÷ mass

180 ÷ 0.0192 = 9375 kg/m

You might be interested in
The ball has 7.35 joules of potential energy at position B. At position A, all of the energy changes to kinetic energy. The velo
Lina20 [59]
I assume that the ball is stationary (v=0) at point B, so its total energy is just potential energy, and it is equal to 7.35 J. 
At point A, all this energy has converted into kinetic energy, which is:
K= \frac{1}{2}mv^2
And since K=7.35 J, we can find the velocity, v:
v= \sqrt{ \frac{2K}{m} }= \sqrt{ \frac{2 \cdot 7.35 J}{1.5 kg} }=3.1 m/s
3 0
3 years ago
A good way to demagnitize something
USPshnik [31]

Answer:

heat it up to above 176f or apply alternating current

Explanation:

7 0
3 years ago
The force of friction always opposes the _______.
Ierofanga [76]

Answer:

motion

Explanation:

uh look it up?

8 0
3 years ago
Read 2 more answers
What’s the formula for work
padilas [110]

Answer:

Fd

Explanation:

Work is force times distance. If you push on an object really hard but it does not budge, you have still performed no work on it, because anything times zero is still zero.

6 0
2 years ago
Read 2 more answers
A pendulum is observed to complete 20 full cycles in 60 seconds. Determine the period and the frequency of the pendulum.
Delvig [45]

i hope i have been useful buddy.

good luck ♥️♥️

5 0
3 years ago
Read 2 more answers
Other questions:
  • A noisy toy is placed in a glass jar. All the air is then slowly removed from the jar. How does this affect the sound you hear?
    7·1 answer
  • The speed of sound at room temperature (20 degrees Celsius) is 343 m/s. If the speed of sound in air increases about 0.60 m/s fo
    14·1 answer
  • The point beneath surface where rock breaks and an arthquake is produced is known as the
    15·1 answer
  • What angle is needed between the direction of polarized light and the axis of a polarizing filter to cut its intensity in half?
    11·1 answer
  • Observations must be _____. <br> subjective <br> objective <br> biased <br> deductive
    11·2 answers
  • What do we call it when two or more moving objects exert forces on each other for a short period of time?​
    13·1 answer
  • If Scoobie could drive a Jetson's flying car at a constant speed of 450.0 km/hr across oceans and space, approximately how long
    5·1 answer
  • Why is acceleration measured in meters / seconds squared? plz use your own words
    12·2 answers
  • The primary coil of a transformer has 225 turns and secondary coil has 1800 turns. The potential difference in the primary coil
    10·1 answer
  • The loaded car of a roller coaster has mass M = 320 kg. It goes over the highest hill with a speed v of 21.4 m/s. The radius of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!