Which statement is correct? 1. The unit of force according to the International System of Units is the Newton. 2. The force is a scalar quantity. Therefore, combining forces Many forces must include both magnitude and direction. 3. Effects arising from the force. Make objects change their size and shape. including changes in direction and speed 4. If the object is at rest The sum of the forces is not zero. The two forces are balanced.
Item 1. is correct and item 2. 3. 4. is wrong.
Item 2. 3. Right, item 1, wrong and item 4. cannot be concluded.
Item 3. is right and item 1. 2. 4. is wrong.
Item 1. 3. Right and Item 2. 4. Wrong.
Answers: 3
Physics, 22.06.2019 09:30
Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential
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An astronaut in space cannot use a scale or balance to weigh objects because there is no gravity. but she does have devices to measure distance and time accurately. she knows her own mass is 77.4 kg , but she is unsure of the mass of a large gas canister in the airless rocket. when this canister is approaching her at 3.50 m/s , she pushes against it, which slows it down to 1.30 m/s (but does not reverse it) and gives her a speed of 2.60 m/s . what is the mass of the canister?
Answers: 1
Physics, 22.06.2019 21:20
Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?
Answers: 1
Physics, 23.06.2019 00:00
Three resistors are connected in series across a 15-v power supply. if the potential drops across resistors 1 and 2 are 4.1 volts and 3.1 volts, what is the exact potential drop (in volts) across resistor 3?
Answers: 2
Which statement is correct? 1. The unit of force according to the International System of Units is t...
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