Physics, 30.06.2019 03:30, brittneyzenger001
Nora tied a string around a tennis ball, and then she swung it in a circle in front of her to demonstrate a planet orbiting the sun. she explained that her hand represented the sun, the ball represented a planet, and the string kept the ball from leaving the "orbit" around her hand. why doesn't the string work in the same way as gravity? a. the string holding the ball in orbit is a contact force; gravity is a noncontact force. b. the string only pulls one way; gravity pulls both ways. c. the string keeps the distance between the bodies the same; gravity makes the distance vary. d. there is no difference between the two systems.
Answers: 2
Physics, 21.06.2019 18:40, robert7248
Carbon-14 is a radioactive element that undergoes beta decay. which force is responsible for allowing carbon-14 to become stable? electromagnetic gravitational weak nuclear strong nuclear
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Physics, 22.06.2019 08:30, bollipard1183
Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.
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Nora tied a string around a tennis ball, and then she swung it in a circle in front of her to demons...
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