Biology

Biology, 30.06.2019 23:30, jb141553

What causes a gravitational field around an object?

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Physics, 27.09.2019 00:00, sloansters9315

A5kg object is released from rest near the surface of a planet such that its gravitational field is considered to be constant. the mass of the planet is unknown. after 2s, the object has fallen 30m. air resistance is considered to be negligible. what is the gravitational force exerted on the 5kg object near the planet’s surface?

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Physics, 18.10.2019 23:30, maddie4321

An object’s tendency to resist acceleration is measured by the object’s a. gravitational mass. c. gravitational field strength. b. inertial mass. d. weight.

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Physics, 23.10.2019 17:30, lieunekop8fm90

To understand the distinction between mass and weight and to be able to calculate the weight of an object from its mass and newton's law of gravitation. the concepts of mass and weight are often confused. in fact, in everyday conversations, the word "weight" often replaces "mass," as in "my weight is seventy-five kilograms" or "i need to lose some weight." of course, mass and weight are related; however, they are also very different. mass, as you recall, is a measure of an object's inertia (ability to resist acceleration). newton's 2nd law demonstrates the relationship among an object's mass, its acceleration, and the net force acting on it: f net=ma . mass is an intrinsic property of an object and is independent of the object's location. weight, in contrast, is defined as the force due to gravity acting on the object. that force depends on the strength of the gravitational field of the planet: w =mg , where w is the weight of an object, m is the mass of that object, and g⃗is the local acceleration due to gravity (in other words, the strength of the gravitational field at the location of the object). weight, unlike mass, is not an intrinsic property of the object; it is determined by both the object and its location. which of the following quantities would be acceptable representations of weight? check all that apply. a.) 12.0 lb b.) 0.34 g c.) 120 kg d.) 1600 kn e.) 0.34 m f.) 411 cm

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Mathematics, 29.10.2019 05:31, asdf334asdf334

Suppose that f is an inverse square force field below, where c is a constant. f(r) = cr/|r|3 r = x i + y j + z k (a) find the work done by f in moving an object from a point p1 along a path to a point p2 in terms of the distances d1 and d2 from these points to the origin. (b) an example of an inverse square field is the gravitational field f = -(mmg)r/|r|3. use part (a) to find the work done by the gravitational field when the earth moves from aphelion (at a maximum distance of 1.52

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