Imagine a skinny straw in the water, standing right over the hole. The WEIGHT of the water in that straw is the force on the tape. Now, the volume of water in the straw is (1 mm^2) times (20 cm). Once you have the volume, you can use the density and gravity to find the weight. And THAT's the force on the tape. If the tape can't hold that force, then it peels off and the water runs out through the hole. /// This is a pretty hard problem, because it involved mm^2, cm, and m^3. You have to be very very very careful with your units as you work through this one. If you've been struggling with it, I'm almost sure the problem is the units.
acceleration = change in velocity /change in time
convert 40km to meter then divide it with 5
Answer:
the one with a higher mass
Explanation:
The body with more mass will have the greater kinetic energy of the two.
Kinetic energy is the energy due to the motion of body. It is mathematically expressed as:
K.E =
m v²
m is the mass
v is the velocity
Since the velocity of the two bodies are the same, and mass is directly proportional to kinetic energy, the body with more mass will have a higher kinetic energy.
So between mass m1 and mass m2, the one with a greater mass will have a higher kinetic energy
Answer:
1. Wave period = 0.962 s
2. Will absorb red and blue and reflect green
Explanation:
1.
The wave period is:
![T = \frac{\lambda }{v} \\Where: \\T: Wave period \\ \lambda : Wavelength \\v: velocity](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B%5Clambda%20%7D%7Bv%7D%20%5C%5CWhere%3A%20%5C%5CT%3A%20Wave%20period%20%5C%5C%20%5Clambda%20%3A%20Wavelength%20%5C%5Cv%3A%20velocity)
Wavelength is the distance between crests. So replacing the given information:
![T = \frac{2.50}{2.60} = 0.962 s\\](https://tex.z-dn.net/?f=T%20%3D%20%5Cfrac%7B2.50%7D%7B2.60%7D%20%3D%200.962%20s%5C%5C)
2. In simple words the color of an object is the light it reflects. A green object reflects green light, and the rest is absorbed (red and blue).