Uh i think you need to show me the material one and material 2?
B. Thermal energy is the energy that warms the earths surface.
Answer:the final speed is 5.01 m/s
Explanation:
Momentum is the product of mass and velocity.
Cart 1 has a mass of 4.2kg and a speed 5.4 m/s
Cart 2 has a mass of 3.2kg and a speed 4.5 m/s
Total momentum before collision is
m1u1 + m2u2. It becomes
4.2×5.4 + 3.2×4.5 = 22.68 + 14.4
= 37.08kgm/s
The carts stick together after colliding head-on. This means that they move with a common velocity, v. Therefore, Total momentum after collision is (m1 + m2)v. It becomes
(4.2 + 3.2)v = 7.4v
According the the law of conservation of momentum, the total momentum before collision = the total momentum after collision. Therefore,
7.4v = 37.08
v = 37.08/7.4 = 5.01 m/s
Answer:
C. Decreasing the distance between the objects.
Explanation:
Gravitational force depends on mass and distance. The farther the objects are apart, the less gravitational force/pull they have.
When saturated air is cooled, it simply reaches its dew point. Dew point is simply the temperature at which dew begins to form.
Dew point of saturated air is already pre-determined by how much water vapor the air contains. A state of saturation exists when the air is holding the maximum amount of water vapor possible at the existing temperature and pressure. The higher the dew point, the higher the moisture content of the air. Cooling does not change the dew point of saturated air, rather its the level of saturation.
So if the air has more moisture, dew will form at a higher temperature and vice versa, but dew point is NEVER EVER GREATER than the air temperature.
