It requires 350 joules to raise a certain amount of a substance from 10.0°c to 30.0°
c. the specific heat of the substance is 1.2 j/g°
c. what is the mass?

Which seasons are the northern and southern hemispheres experiencing in the image? it is summer in both the northern and southern hemispheres. it is summer in the northern hemisphere and winter in the southern hemisphere. it is winter in both the northern and southern hemispheres. it is winter in the northern hemisphere and summer in the southern hemisphere.

When an object is heated it contracts. a. true b. false

Given the position vector of the particle r(t)=(t+1)i+(t^2−1)j+2t k, find the particle's velocity and acceleration vectors at t=1