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3 years ago

It's important to do cardiovascular exercise on a regular basis because it _____.

Physics

1 answer:

n200080 [17]3 years ago

4 0

Answer:

I believe it improves your hearts stroke volume

If im wrong plz let me know

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What is the name of the area around a charged object where the object can exert a force on other charged objects?

Ivahew [28]

I believe it’s the electric field.

6 0

3 years ago

In the diagram, q1 = -6.39*10^-9 C and q2 = +3.22*10^-9 C. What is the electric field at point P? Include a + or - sign to indic

AleksAgata [21]

Correct Answer:

-391.1077613

6 0

3 years ago

A car sits in an entrance ramp to a freeway, waiting for a break in the traffic. The driver sees a small gap between a van and a

masya89 [10]

Answer:

$a = 2.82 \ m/s^2$

$t = 8.87 \ s$

$s = 204 \ m$

Explanation:

From the question we are told that

The speed of the car is $v = 25.0 \ m/s$

The length of the ramp is $d = 111 \ m$

The constant velocity of the traffic $v_t = 23.0 \ m/s$

Generally the acceleration of the car is mathematically represented as

$a = \frac{v^2 - u^2 }{2d}$

Here u is equal to zero given that the car started from rest so

$a = \frac{25^2 - 0^2 }{2 * 111}$

=> $a = 2.82 \ m/s^2$

Generally the time taken is mathematically represented as

$t = \frac{ v - u}{ a}$

=> $t = \frac{ 25 - 0}{2.82}$

=> $t = 8.87 \ s$

The distance traveled by the traffic is mathematically represented as

$s = v_{t}t + \frac{1}{2} a t^2$

Here a is zero given that the traffic was moving at constant speed

=> $s = 23 * 8.87$

=> $s = 204 \ m$

7 0

3 years ago

Astronomers have measured that there is more helium in the universe than can be explained by the fusion in stars over the last 1

andrew-mc [135]

Answer:

From big bang and stars.

Explanation:

The extra helium got into the universe through big bang and fusion reaction that occur in stars. Our universe formed about 13.7 billion years ago with big explosion, this event is known as big bang. The fusion of hydrogen nuclei in the stars produces helium and energy so we can say that most of the extra helium got into the universe through fusion reaction that occur in the stars continuously.

8 0

3 years ago

Water is pumped at the rate of 0.075 m3/s from a reservoir 20 m above a pump to a free discharge 35 m above the pump. The pressu

Allushta [10]

Answer:

(a) 408.16 m

(b) 10.87 m

Solution:

As per the question:

Height of the reservoir, h = 20 m

Pressure on the intake, $P_{i} = 150\ kPa$