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UNO [17]
3 years ago
12

Give three examples from your life of magnetic force.

Physics
2 answers:
rewona [7]3 years ago
7 0
Magnets,popsocket, and a car
Margaret [11]3 years ago
4 0
Headphones, refrigerator magnets, and compasses

Hope that was helpful.
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If the mass of a material is 45 grams and the volume of the material is 11 cm^3, what would the density of the material be?
Stella [2.4K]

The density of the material would be 4.1 g/cm³.

Density is calculated by dividing the mass by the volume.

D=m÷v

D=45 g÷11 cm³

D=4.1 g/cm³

3 0
3 years ago
Read 2 more answers
A MEMS-based accelerometer has a mass of m = 2 grams, an equivalent spring constant of k = 5 N/m, and an equivalent damping coef
pychu [463]

Answer:

The natural frequency = 50 rad/s = 7.96 Hz

Damping ratio = 0.5

Explanation:

The natural frequency is calculated in this manner

w = √(k/m)

k = spring constant = 5 N/m

m = mass = 2 g = 0.002 kg

w = √(5/0.002) = 50 rad/s

w = 2πf

50 = 2πf

f = 50/(2π) = 7.96 Hz

Damping ratio = c/[2√(mk)] = 0.1/(2 × √(5 × 0.002)) = 0.5

5 0
3 years ago
Many of the whales in the ocean rely upon tiny marine organisms, called plankton, for food. If all of the plankton suddenly died
exis [7]

Answer:

I believe the answer to be B.

Explanation:

Without food, the whales would die.

8 0
3 years ago
A rope has one end tied to a vertical support. You hold the other end so that the rope is horizontal. If you move the end of the
Strike441 [17]

Answer:

c. 2 m/s

Explanation:

The relationship between speed, frequency and wavelength of a wave is given by:

v=f \lambda

where

v is the speed of the wave

f is its frequency

\lambda is the wavelength

For the transverse wave in this problem, we have:

f = 4 Hz is the frequency

\lambda=0.5 m is the wavelength

Substituting these numbers into the equation, we find the speed of the wave:

v=(4 Hz)(0.5 m)=2 m/s

7 0
3 years ago
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
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