Answer:
If you put a flashlight on the east side of a plant, the plant will grow in that direction. This is a process called phototropism. Tropism is a plant's reaction to stimulus like gravity, light, water, chemicals, heat, and more. Plants always grow toward light, because they need more of it.
Answer:
1.7135 x 10^10 J / s
Explanation:
R = 20 cm = 0.2 m
e = 0.79
To = 15 degree C = 15 + 273 = 288 K
T = 200 degree C = 200 + 273 = 473 K
Energy radiated per unit time = A x e x (T^4 - To^4)
Power radiated = 4 x 3.14 x 0.2 x 0.2 x 0.79 x (473^4 - 288^4)
= 1.7135 x 10^10 J / s
Answer:
Explanation:
I can use insulated materials to cover the doors, windows and floors or I use quilted blankets to cover the doors, windows and the floor, this will reduce the sound coming in the room and the sound escaping out of the room.
I can possibly use carpet or floor mats on the floor, especially in front of the door to cover the crack that may be underneath it.
Answer:
p>Whether an object will float or sink is dependent on its density, and on the density of the liquid it is placed in. In the case of water, an object with a density less than 1 g/cm3 will float. The closer its density is to 1 g/cm3, the more of it will sit below the water level.