The Congo River is in Africa.<br><br><br> True or False

True or False: The absorption of alcohol can be slowed down by eating, but only water can reduce the BAL level.

lesya [120]

A hopes this helps idk this

3 0

3 years ago

A helicopter is dropping a package of rescue supplies to a group of stranded hikers. If it drops the supplies while it is hoveri

Ann [662]

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of the average velocity at which the supplies are travelling in air. The formula to be used here if the completed question is obtained is

Average velocity (in m/s) = distance (m) ÷ time (s)

Since we are looking for the time, then time should be made the subject of the formula

time (in secs) = distance ÷ average velocity

5 0

3 years ago

A car is moved 26km/hr due east for 4minute.what is its average velocity in m/s?

fenix001 [56]

Answer:

25m/sec

Explanation:

Speed of car in first 15 minutes = 40 km/h

Distance covered = speed × Time taken

60 minutes = 1 hour

15 minutes =

60

15

hour

Distance covered = 240×

60

15

=10km

Speed of car in next 15 minutes = 60 km/h

Distance covered = 60×

60

15

=15km

∴ Total distance covered = (10+15)km = 25 km

6 0

3 years ago

Larger animals have sturdier bones than smaller animals. A mouse's skeleton is only a few percent of its body weight, compared t

Rama09 [41]

Answer:

$a_s=4.8\times 10^{-2}~m^2$

Explanation:

Given:

cross sectional area of the bone, $a=4.8 \times 10^{-4} ~m^2$

factor of up-scaling the dimensions, $s=10$

Since we need to find the upscaled area having two degrees of the dimension therefore the scaling factor gets squared for the area being it in 2-dimensions.

The scaled up area is:

$a_s=a\times s^2$

$a_s=[4.8 \times 10^{-4}]\times 10^2$

$a_s=4.8\times 10^{-2}~m^2$

7 0

3 years ago

A spring is stretched 6 m when a mass of 20kg is hung on it. Calculate the spring constant of this spring

tresset_1 [31]

The spring constant of this spring is 9810 N/m.

<h3>What is spring constant?</h3>

Hooke's law states that the force (F) needed to extend a spring is proportional to the distance from the equilibrium position of spring.

F =kx

where k is the constant of proportionality called spring constant.

As, the mass attached with the spring is hung, then the force is equal to the weight (W).

F = W

So, kx =mg

Substituting W = mg into equation (ii) above, we have

F = mg

Substituting F = mg into equation (i) above, we have

mg = kx

Substitute, extension x = 2cm = 0.02m, mass m= 40g = 0.04kg, g is the acceleration due to gravity =9.81m/s²

Substituting these values into equation, we have

k = 20 x 9.81 /0.02

k = 9810 N/m

Therefore, the spring constant is k = 9810 N/m.

Learn more about spring constant.

brainly.com/question/14159361

#SPJ4

8 0

2 years ago

The Congo River is in Africa. True or False