Answer: C. Inherited traits carry the instructions for individual genes.
Explanation: bejewels I know stuff. ☆ - ~ hope this helps
AnswerNo
However, the acceleration is the opposite of the movement:
Explanation:
Answer:
The speed of the sap flowing in the vessel is 1.90 mm/s
Explanation:
Given:
The rate of water loss, Q = 3 × 10 ⁻⁸ m³/s
Number of vessels contained, n = 2000
Diameter of the vessel, D = 100 Mu m
thus, the radius of the vessel, r = 50 × 10⁻⁶ m
Now, the rate of flow is given as:
Q = AV .............(1)
where, A is the area of the cross-section
V is the velocity
Total area, A = n × (πr²)
substituting the values in the equation (1), we get
3 × 10 ⁻⁸ m³/s = [2000 × (π × (50 × 10⁻⁶)²)] × V
or
V = 1.909 × 10⁻³ m/s or 1.90 mm/s
Hence, the speed of the sap flowing in the vessel is 1.90 mm/s
Answer:
Geology is the study of the Earth that involves the process at Earth, materials of which it is made, and its history.
<u>Geologists combine both laboratory and field data to illustrate the results of their research. Some observations that can the geologist make by working outdoors instead of in a lab are as follows:</u>
- Understanding and exploring the earth's surface closely using geophysical tools.
- Collecting samples by own and make some interpretations at the same time.
- Observation of the landscapes
- Close observation of outcrops
Answer:
Explanation:
The inclined plane
An inclined plane consists of a sloping surface; it is used for raising heavy bodies. The plane offers a mechanical advantage in that the force required to move an object up the incline is less than the weight being raised (discounting friction). The steeper the slope, or incline, the more nearly the required force approaches the actual weight. Expressed mathematically, the force F required to move a block D up an inclined plane without friction is equal to its weight W times the sine of the angle the inclined plane makes with the horizontal (θ). The equation is F = W sin θ.
The lever
A lever is a bar or board that rests on a support called a fulcrum. A downward force exerted on one end of the lever can be transferred and increased in an upward direction at the other end, allowing a small force to lift a heavy weight.
The wedge
A wedge is an object that tapers to a thin edge. Pushing the wedge in one direction creates a force in a sideways direction. It is usually made of metal or wood and is used for splitting, lifting, or tightening, as in securing a hammer head onto its handle.
The wheel and axle
A wheel and axle is made up of a circular frame (the wheel) that revolves on a shaft or rod (the axle). In its earliest form it was probably used for raising weights or water buckets from wells.
Its principle of operation is best explained by way of a device with a large gear and a small gear attached to the same shaft. The tendency of a force, F, applied at the radius R on the large gear to turn the shaft is sufficient to overcome the larger force W at the radius r on the small gear. The force amplification, or mechanical advantage, is equal to the ratio of the two forces (W:F) and also equal to the ratio of the radii of the two gears (R:r)
