# sciecne

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sciecne
Which agent probably contributes most to the genral wearing down of Earth's surface? explain i know the answer is "running water" but how to explain it?

earth sciecne
which landscape region of NY is composed of low hills of sorted sediments of Cretaceous and Pleistocene age? 1 the hudson- mohawk lowlands 2 the atlantic coastal plain 3 the complain lowlands 4 the erie- ontario lowlands. is it 4

sciecne
Two thin hollow plastic spheres, about the size of a ping-pong ball with masses (m1 = m2 = 2e-3 kg) have been rubbed with wool. Sphere 1 has a charge q1 = -6e-9 C and is at location < 40e-2, -20e-2, 0 > m. Sphere 2 has a charge q2 = -6e-9 C and is at location < -50e-2...

sciecne
A space station has the form of a hoop of radius R = 15 m, with mass M = 6000 kg. Initially its center of mass is not moving, but it is spinning slowly with angular speed รน0 = 0.0018 radians/s.Then a small package of mass m = 5 kg is thrown by a spring-loaded gun toward a ...

sciecne
In unit-vector notation, what is the sum of vector a =(4m)i + (3m)j and vector b= (-13m)i +(7m)j? a)I got (27m)i +(10m)j but the book said it should have been (-9m)i +(10m)j b)what is the magnitude and direction of vector a + vector b (relative to i)? to find the magnitude i ...

sciecne
An airplane is being floen at 1500km/h at 100m above level ground. The ground began to rise up at 10 degrees. How much time does the pilot have to madke correction such that the plane doesn't hit the ground? the part where the ground is rised to 10 degrees confuses me. You ...

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