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Dmitry [639]
3 years ago
6

A 10 N force and a 55 N force act on an object in opposite directions. What is the net force on the object ?​

Physics
1 answer:
stiv31 [10]3 years ago
6 0

Answer:

对不起,我不知道对不起

Explenation:

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I have these questions I need to find the acceleration, Please explain how to do them, Don't have to explain all xD
34kurt
1. a=(v-v0)/t
a=14 m/s / 2s
a=7 m/s^2
2. <span>a=(v-v0)/t
</span>a=(30 m/s - 0 m/s) / 12 s
a=2.5 m/s^2
3. <span>a=(v-v0)/t
a=(37 m/s - 22 m/s) / 2 s
a= 7.5 m/s^2
4. </span><span>a=(v-v0)/t
a=(12 km/s - 0 km/s)/8 s
a=1.5 km/s^2
etc</span>
7 0
4 years ago
Osmium (os) is the densest element known (density = 22.57 g/cm3). Calculate the mass in pounds and in kilograms of an os sphere
Rufina [12.5K]

<u>Answer:</u>

    Mass in kg = 39.88

    Mass in pounds = 87.92

<u>Explanation:</u>

   We have the expression for Density, ρ = Mass / Volume, in this case density is given and we need to find mass and volume.

   Volume of a sphere, we have the expression V = \frac{4}{3} \pi r^3, where r is the radius of sphere.

   Radius of sphere, r = Half of diameter = 15/2 = 7.5 cm

   So V = \frac{4}{3}* \pi* 7.5^3 = 1767.15 cm^3

  Mass = Volume *  Density = 1767.15*22.57 = 39884.49 g

    Mass in kg = 39884.49/1000 = 39.88 kg

    Mass in pounds = 39.88*2.205 = 87.92 lb

4 0
4 years ago
When a sound is produced, how does it travel to your ear?
Tomtit [17]

Answer:

Sound wave enters the outer ear and travels through a narrow passageway called the ear canel, which leads to the eardrums

5 0
3 years ago
Which term describes electrons being ejected from a metal surface that light is shining on?
spin [16.1K]

That's the Photoelectric effect. Einstein won his (only) Nobel Prize for his explanation of the Photoelectric Effect, published in 1907.

6 0
4 years ago
Read 2 more answers
Comic-book superheroes are sometimes able to punch holes through steel walls. (a) If the ultimate shear strength of steel is tak
Katena32 [7]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

shear stress is the measure of the material's resistance to cause "sliding" motion of its layers. 
<span>Since the hero has to take a cylindrical piece of metal out, the area which will cause this force is 2*pi*r*l (put r and l in SI units to get answer in Newtons) </span>
<span>so the force required is shear strength into this area (2.60109 * 2 * pi * r * l) </span>
7 0
4 years ago
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