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3 years ago

Which describes density?

Physics

2 answers:

LUCKY_DIMON [66]3 years ago

5 0

Answer:

the answer to your question is C, Amount of mass in a given volume

Explanation:

lapo4ka [179]3 years ago

4 0

Answer:

Explanation:

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The muzzle velocity of an armor-piercing round fired from an M1A1 tank is 1770 m/s (nearly 4000 mph or mach 5.2). A tank is at t

loris [4]

<h2>Height of cliff is 66.43 meter.</h2>

Explanation:

Consider the horizontal motion of shell,

We have equation of motion s = ut + 0.5 at²

Initial velocity, u = 1770 m/s

Acceleration, a = 0 m/s²

Displacement, s = 6520 m

Substituting

s = ut + 0.5 at²

6520 = 1770 x t + 0.5 x 0 xt²

t = 3.68 s

Time of flight of shell = 3.68 s.

Now consider the vertical motion of shell,

We have equation of motion s = ut + 0.5 at²

Initial velocity, u = 0 m/s

Acceleration, a = 9.81 m/s²

Time, t = 3.68 s

Substituting

s = ut + 0.5 at²

s = 0 x 3.68 + 0.5 x 9.81 x 3.68²

s = 66.43 m

Height of cliff is 66.43 meter.

8 0

3 years ago

What is the net force of a 25 g object with an acceleration of 3 m/s^2?

sasho [114]

Answer:

F = 0,075N

Explanation:

4 0

3 years ago

A projectile is launched from the surface of a planet (mass = 15 x 1024 kg, radius = R = 9.6 x 106 m). What minimum launch speed

Serjik [45]

Answer:

The minimum launch speed is 13366.40 m/s.

Explanation:

Given that,

Mass of planet $M=15\times10^{24}\ kg$

Radius $R= 9.6\times10^{6}\ m$

Height = 6R

We need to calculate the speed

Using relation between gravitational force and total energy

$-\dfrac{GMm}{6R+R}=\dfrac{1}{2}mv^2-\dfrac{GMm}{R}$

$\dfrac{}{}mv^2=\dfrac{GMm}{7R}-\dfrac{GMm}{R}$

$\dfrac{1}{2}mv^2=\dfrac{6GMm}{7R}$

$v^2=\dfrac{2\times6GM}{7R}$

Put the value into the formula

$v=\sqrt{\dfrac{2\times6\times6.67\times10^{-11}\times15\times10^{24}}{7\times9.6\times10^{6}}}$

$v=13366.40\ m/s$

Hence, The minimum launch speed is 13366.40 m/s.

6 0

3 years ago

Read 2 more answers

The number 14 is the 'mass number'. What does it tell us about this isotope?

Svetradugi [14.3K]

Answer:

This show the most stable of atom of that element

Explanation:

The mass number of a element on the periodic table show the most stable atoms of that element.

4 0

3 years ago

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