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azamat
3 years ago
12

5. Tại sao khi lặn ta luôn cảm thấy tức ngực và càng lặn sâu thì cảm giác tức ngực càng tăng? A. Ap suất của nước giảm ​​B. Ap s

uất không khí tăng C. Ap suất không khí giảm ​​D. Ap suất của nước tăng
Physics
1 answer:
natali 33 [55]3 years ago
7 0

Answer:

c and d

Explanation:

obviously kksxsxksxkskxkskxksxksxsxsxsxsxsxsxs

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Calculate the average power required to lift a 490-newton object a vertical distance of 2.0 meters in 10. seconds. [Show all wor
bagirrra123 [75]
For this problem, you should be able to differentiate the variables presented from each other in order to substitute them in their corresponding places in the formula or formulas to be utilized in this problem. As for this problem, the only formula to be utilized would be the formula for power which is force multiplied to distance over time or simply have force multiplied to speed since speed is equal to distance over time.

The formula would like this:

Power = force x distance / time                          Power = force x speed

P = 490 N x 2 m / 10 s                                        P = 490 N x (2 m / 10 s)
P = 980 N m / 10 s                                              P = 490 N x 0.2 m / s
P = 98 W                                                             P = 98 W

So the average power required to lift a 490-newton object a vertical distance of 2.0 meters in 10 seconds would be 98 watts.
3 0
3 years ago
What must be your average speed in order to travel 350 km in 5.15 h? *
Alexxandr [17]
V= s/t
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=68.0 km/h
3 0
3 years ago
Car A has a mass of 1,200 kg and is traveling at a rate of 22 km/hr. Car B has a mass of 1,200 kg and is traveling in the same d
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<span>Car B has a greater momentum than car A.
Since, momentum =  mass *  velocity
mass of both car A and B is same, velocity of B is greater than A.
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5 0
4 years ago
Read 2 more answers
Objects with masses of 181 kg and 712 kg are separated by 0.442 m. A 72.6 kg mass is placed midway between them. 0.442 m b b 181
Semmy [17]

Answer:

The Force exerted by the two objects will be same and 4,401,189.49  × 10−11 N

Explanation:

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m2= 712 kg

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G is the gravitational Constant

According to Newtons Law Gravitational Force is given by

F=G m1 m2 /d²

F= 6.672 × 10−11 ×181×712/(0.442)²

F=  859,576.24  × 10−11/0.195364

F=  4,401,189.49  × 10−11 N

The Force exerted by the two masses on the third mass will be same and 4,401,189.49  × 10−11 N

5 0
3 years ago
A switch in an electric circuit controls the flow of electrons in the circuit.
Delvig [45]

Answer:

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Explanation:

7 0
3 years ago
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