Aplastic rod becomes negatively charged when it is rubbed with a piece of wool. how does the rod become charged?
a. electrons move from the rod to the wool.
b. protons move from the rod to the wool.
c. electrons move from the wool to the rod.
d. protons move from the wool to the rod.
Answers: 2
Physics, 22.06.2019 18:50
8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
Answers: 3
Physics, 23.06.2019 00:10
An astronaut floating in space is trying to use her jetpack to get back to her space station, but she is being pulled away by a nearby planet, as shown in the image below. her jetpack provides a constant thrust of 310 n. if she angles her jetpack in such a way that it cancels out the vertical force due to the planet's gravity, what is her net horizontal force? thaud 487 o a. 54.8 n toward the space station o b. 212.9 n toward the space station o c. 185.2 n toward the space station o d 956 n toward the space station
Answers: 1
Physics, 23.06.2019 20:30
The dense fluid in chloroplasts where carbon dioxide is converted to sugar is called the?
Answers: 1
Aplastic rod becomes negatively charged when it is rubbed with a piece of wool. how does the rod bec...
Mathematics, 23.01.2020 03:31
Mathematics, 23.01.2020 03:31
Health, 23.01.2020 03:31
English, 23.01.2020 03:31