Physics, 18.02.2020 23:00 yaxcalandreya
It is known that the gravitational force of attraction between two protons is much weaker than the electrical repulsion. For two protons at a distance d apart, calculate the ratio of the size of the gravitational attraction to that of the electrical repulsion. Specifically, find the magnitude of Fgravitational/Felectrical. Use the following data: k = 8.99×109 Nm2/C2 charge on one of the protons = 1.60×10-19 C G = 6.67×10-11 Nm2/kg2 mass of one of the protons = 1.67×10-27 kg.
Answers: 1
Physics, 22.06.2019 16:00
The electric field direction is defined by the direction of the force felt by (select one of the following answers): 1. a negative charge. 2. a positive charge. 3. both positive and negative charges.
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Physics, 23.06.2019 02:50
You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?
Answers: 1
Physics, 23.06.2019 03:00
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2 . how much is the spring compressed x from its natural length?
Answers: 3
Physics, 23.06.2019 04:31
You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.
Answers: 2
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