Water-lifting devices are used to lift water to a height that allows users easy access to water. ... Other devices, such as the air-lift pump, are not included because they are not applicable to drinking-water supply systems. 4.2 Rope and bucket1. 4.2.1 The technology. This device is mainly used with hand-dug wells.

8 0

3 years ago

What kind of frequency do radio waves have? A. High frequency B. Low frequency

inn [45]

B low frequency it is the lowest frequency

7 0

3 years ago

n a ballistics test, a potato gun shoots a 0.34 kg potato into a 5.0 kg catching cart. The cart recoils at 3.7 m/s after catchin

Gala2k [10]

The initial velocity of the potato is 54.41 m/s.

The given parameters:

Mass of the potato, m = 0.34 kg
Mass of the cart, m = 5.0 kg
Velocity of the recoil, u₂ = 3.7 m/s

The initial velocity of the potato is calculated by applying the principle of conservation of energy as follows;

$m_1u_1 = m_2 u_2\\\\u_1 = \frac{m_2 u_2}{m_1} \\\\u_1 = \frac{5 \times 3.7}{0.34} \\\\u_1 = 54.41 \ m/s$

Thus, the initial velocity of the potato is 54.41 m/s.

Learn more about conservation of linear momentum here: brainly.com/question/7538238

6 0

3 years ago