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Pitanje 23
23.
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Pitanje 24
24.
This Formative will cover Unit 3.2-3.5
This Formative will cover Unit 3.2-3.5
What does the law of conservation of energy state?
Stored energy is also known what kind of energy?
Energy of motion is also referred to as what type of energy?
Which of the following relates to Coulombs law?
Two copper spheres are currently 1.2 meters apart. One sphere has a charge of +2.2 × 10-4 C and the other has a charge of –8.9 × 10-4 C. What is the force between the charged spheres? Is the force attractive or repulsive?
Two metal rods in a factory are oppositely charged and placed 8.9 cm apart. One rod has a charge of 7.5x10-7 C and the other has a charge of -5.1x10-5 C. What is the force between the rods. Is it an attractive or repulsive force?
Two charged objects in a laboratory are brought to 0.22 meters away from each other. If the force between the spheres is 4,550 N and the charge on one object is 9.9 x 10-5 C, what is the charge on the other object?
What is the force between two protons that are separated by 1.0 mm? The charge of a proton is 1.6x10-19 C.
If there is a force of gravity between all objects that have mass, why don't two people standing near each other not get pulled together from gravity?
Who discovered the law of universal gravitation?
A 485 kg sphere sits at 14.0 km due north of an 852 kg sphere. What is the force of gravity on the first sphere due to the second sphere? Compare this to the force of gravity on the second sphere due to the first sphere. (Show your work using the math symbol on the left toolbar)
If you recall, for calculating the force of gravity for objects near earth's surface, you can use Newton's 2nd Law of Motion. Knowing that as well as acceleration due to gravity (previously provided in your notes as well), what would be the Fg of a watermelon that had a mass of 3kg?
Refer to the above video if you need assistance
Draw the force diagram, as it relates to gravity, for the objects (use the drawing tools)
What is the distance between two objects if one (a 185,000 kg object) experiences a gravitational force of 0.00200 N due to a 225,000 kg object.
What is the acceleration due to gravity felt by the International Space Station? The ISS has a mass of 4.5 × 105 kg and is in an orbit of about 380 km. Earth has a mass of 6.0 × 1024 kg and a radius of 6,400 km. (Assume G=6.67×10−11N⋅m3⋅kg−1⋅s−2)
A 3.0 kg object sits at 2.0 m west of a 5.0 kg object. A 2.0 kg object sits at 2.5 m east of the 5.0 kg object. Find the center of mass of this system.
A spacecraft orbiting a planet at an altitude of 120 Km releases a satellite that falls toward the surface. The planet has a mass of 5.2 x 1023kg and a radius of 2800 km. What is the acceleration of the satellite?
What element is the video referring to?
Why can't we 'harvest' (that is to say, why can't we get) hydrogen from the atmosphere (air)?
Instead of getting hydrogen from air, we can get it from water by splitting hydrogen from oxygen...but there's one problem...what is that problem?
What is the solution the speaker is suggesting for producing hydrogen with the least amount of energy?