3 years ago

2. A stone is thrown horizontally at a speed of 6.0 m/s from the top of a cliff 78.4 m high.

Physics

1 answer:

Ostrovityanka [42]3 years ago

3 0

Answer:

a) 8 seconds if you are using earth's gravity.

b) 48m if the velocity does not change

c) 9.8m/s

Explanation:

You might be interested in

A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km

Colt1911 [192]

Answer:

C) 0.00026 Hz

Explanation:

In any wave, there exists a fixed relationship between the speed v, the frequency f and the wavelength λ, as follows:

$v = \lambda * f (1)$

Replacing by the givens in (1), and solving for f, we get:

$f = \frac{v}{\lambda} = \frac{700km/hr}{750 km} = 0.93 1/hr (2)$

Converting the units to Hz (1/sec), we get:

$f = 0.93 \frac{1}{hr} *\frac{1 hr}{3600sec} = 2.6e-4 = 0.00026 Hz (2)$

The answer C. is the right one.

7 0

3 years ago

A sheet of gold leaf has a thickness of 0.125 micrometer. A gold atom has a radius of 174pm. Approximately how many layers of at

Olegator [25]

Answer:

719

Explanation:

Conversion

1 picometer (pm) is equivalent to $1 × 10^{-12}$ meter

1 micrometer is equivalent to $1 × 10^{-6}$ meter

To find the number of layers, we divide the overal leaf thickness by the thickness of one atom hence dividing tex]0.125 × 10^{-6}[/tex] meter by $174 × 10^{-12}$ meter we get that the number of sheets will be as follows

$\frac {0.125× 10^{-6}}{174\times 10^{-12}}=718.3908045\approx 719$

Therefore, they are approximately 719 sheets

7 0

3 years ago

HELP ME PLZ

Nadusha1986 [10]

Answer: 1200 000 J = 1.2 MJ

Explanation: Ek = 0.5 mv² = 0.5 · 1500 kg· (40 m/s)²

3 0

3 years ago

5. Which of the following statements is not true regarding atmospheric pressure? A. You calculate absolute pressure by adding at

Yakvenalex [24]

The answer is C. I hope this helps :)

8 0

4 years ago

3. The value of frictional force on block in the given

poizon [28]

I need help with my homework it’s due tomorrow and I feel like I failed can u help me bro

6 0

4 years ago