Geologists use tools other than the law of superposition to help them with relative dating. Which statements describe those tools? Check all that apply.

Answer:

Explanation:

Since the forces are only in the x-direction, you could just add the two forces. The West is to the left, so it would be -25N with the negative sign indicating direction. The East is to the right, so that would be +50N.

50 + (-25) = 25N to the right or the positive i-hat direction

Answer:

A

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Explanation:

Answer:

Bacteria

Fungi

Viruses

Parasites

Answer:

Think the last one

Explanation:

Answer:750

Explanation:

50 times 15

Answer:

750 j

Explanation:

I took the test in k12

Answer:

your body is exerting a force on the chair and nothing is happening

Explanation:

Answer:

the second one

Explanation:

as you sit down you are using gravitational force which is pulling straight down but as you sit down there are currently no forces in motion while sitting

Answer:

The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke. Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose.

Explanation:

Answer:

Volcanoes that form away from plate boundaries are created by hotspots. A hotspot is an area in the mantle that is believed to be somewhat hotter than the surrounding material. The rising magma from the hotspot can push its way through the crust and burst out at the surface, forming a volcano.

Explanation:

Volcanoes can form in subduction zones, which are regions where tectonic plates are interacting one and plate is sinking beneath the other.

A volcano is a hill or mountain in the shape of a cone that is erected around a fissure in the surface of the earth thru which heated gases, rock fragments, and lava are released. A conical mass grows around the conduit as the solid fragments gather there, becoming progressively larger until it reaches the size of a gigantic volcanic mountain.

A volcano is an aperture or vent through which magma, tephra (small rocks), or steam are released onto the the planet's surface. Days, weeks, or even years might pass between outbursts of volcanoes.

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Answer:

Centi is the metric prefix for 0.01

Answer:

5.55m/s

Explanation:

The vertical velocity of the ball just before it hits the floor is [v] = 4.42 m/s and  horizontal velocity of the ball just before it hits the floor is [u] = 6.6 m/s.

Projectile motion is an example of two dimensional motion.

Given is a ball rolls off a 1 m high table and lands on the floor 3 m away from the table.

Using the second equation of motion for the vertical motion -

S = ut + 1/2at²

S = 0 + 1/2at²

S = 1/2at²

t²= 2S/a

t² = (2 x 1)/9.8

t² = 2/9.8  

t² = 0.2040

t = 0.451

Now, the vertical velocity of the ball just before it hits the floor -

v = u + at

v = 0 + at

v = at

v = 9.8 x 0.451

[v] = 4.42 m/s

Now, using the second equation of motion for horizontal direction -

S = ut + 1/2at²

S = ut + 0

3 = u x 0.451

u = 3/0.451

[u] = 6.6 m/s

Which is also the horizontal velocity of the ball just before it hits the floor.

Therefore, the vertical velocity of the ball just before it hits the floor is [v] = 4.42 m/s and  horizontal velocity of the ball just before it hits the floor is [u] = 6.6 m/s.

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Answer:

A-first law

B-third law

C-second law

Explanation:

Answer:

ology

Explanation:

Explanation:

Wavelength = speed of light/frequency

Answer is

[tex]6 \times {10}^{ - 7} [/tex]

Answer:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. ... For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.

Explanation:

Answer:

Because space is a void with no air flow

Explanation:

Answer:

a)  [tex]v_{oy}[/tex] = 0,  b)  t = 9.035 s, c) x = 587.275 m, d)  v_y = -88.54 m / s,

e) v = 109.84 m / s,  f)  θ = -53.7º

Explanation:

This exercise is a projectile launch

a) as the projectile is launched horizontally, its initial vertical velocity is zero

          [tex]v_{oy}[/tex] = 0

b) let's use the relation

          y = y₀ + v_{oy} t - ½ g t²

when reaching the ground y = 0 and the initial vertical velocity is v_{oy}=0

         0 = y₀ + 0 - ½ g t²

         t = [tex]\sqrt{ \frac{2 v_o}{g} }[/tex]

         t = [tex]\sqrt{ \frac{ 2 \ 400 }{ 9.8} }[/tex]

         t = 9.035 s

c) the horizontal distance is

         x = v₀ₓ t

         x = 65  9.035

         x = 587.275 m

d) the vertical speed when touching the ground

         v_y = [tex]v_{oy}[/tex] -gt

         v_y = 0 - 9.8 9.035

          v_y = -88.54 m / s

the negative sign indicates that the velocity is directed downwards

e) the velocity at this point

          v = [tex]\sqrt{ v_x^2 + v_y^2}[/tex]

          v = [tex]\sqrt{65^2 + 88.54^2}[/tex]

          v = 109.84 m / s

f) the direction of the velocity

let's use trigonometry

          tan θ = v_y / vₓ

          θ = tan⁻¹1 v_y / vₓ

          θ = tan⁻¹ (-88.54 / 65)

          θ = -53.7º

this angle is measured clockwise

Answer:

660

Explanation:

0.011kW = 11W

energy = 11 x 60

            = 660J

Answer:

30

Explanation:

30

the total length of the spring in centimeters when it is stretched to the point where 2.8 joules are stored in it is 30.

length can be defined as the measurement which is an act for the identification of the object's length in some standard or non-standard units.

The most common units of length  are U.S. customary units and the metric units  include SI and non-SI units, others are  British Imperial units are also still used in some countries.

Other units of length include kilometres, nanometre, millimetres, centimetres, metres, decimetres  where as the Imperial and U.S. customary systems, basic unit of length is the yard.

other units are thou (1⁄1000 of an inch), line (1⁄12 of an inch), inch (25.4 mm), foot (12 inches, 0.3048 m)

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Answer:

reacts with metals: acid

reacts with nonmetal: base

taste sour: acid

can cause burns: both

conduct electricity: both

taste bitter: base

Answer:

d = s • t

3m/s • 45s and and the seconds will cancel out.

135 meters

Answer:

velocity=3m/s

time=45sec

displacement=?

Explanation:

we have

velocity=displacement/time

3m/s=displacement/45

displacement=3×45=135m

Mikel runs 135m far.

Answer:

When a bee stings, it injects methanoic acid into the skin which causes immense pain and irritation. Rubbing of baking soda on the sting area gives relief because, being alkaline in nature, baking soda neutralizes the effect of methanoic acid and gives relief.

Answer:

the time of motion of the ball is 6.89 ms.

Explanation:

Given;

angular speed, ω = 38 rad/s

angular distance, θ = 15 degrees

Angular distance in radian;

[tex]\theta = 15^0 \times\frac{2\pi \ rad}{360^0} = 0.2618 \ rad[/tex]

Time of motion is calculated as;

[tex]time = \frac{angular \ distance}{angular \ speed} \\\\t= \frac{\theta}{\omega} = \frac{0.2618 \ rad}{38 \ rad/s} \\\\t = 6.89 \ \times 10^{-3} \ s\\\\t = 6.89 \ ms[/tex]

Therefore, the time of motion of the ball is 6.89 ms.

Answer:

I dont really know but i think its water type of energy

Explanation:

Hope it helps

Answer:

Explanation:

Force of friction and air resistance  acts against the external force . Let it be f .

net force = external force - frictional force and air resistance

Putting the given values

200 = 500 - f

f = 500 - 200 = 300 N .

Hence force of friction = 300 N .

Answer:

2.5 seconds

Explanation:

20:8= 2.5 seconds

have a nice day! (^o^)

Answer:

2.5 seconds

Explanation:

20 ÷ 8 = 2.5

That's it.

Answer:

please use the formula to find the current/use ohms law

Explanation:

I=v/r

Answer:

Explanation:

100 mph = 100 x 1760 x 3 / ( 60 x 60 )

= 146.67 ft / s

70 mph = 70 x 1760 x 3 / ( 60 x 60 )

= 102.67 ft/s

Let mass of the ball = m .

The ball which was moving with a velocity of 146.67 ft/s is turned back by the action of force of bat on the ball and it moved in opposite direction with velocity of - 102.67 ft/s ( - ve sign due to reversed direction )

If m be the mass of ball

change in momentum = m x 146.67 - ( - m x 102.67 )

=  m x 146.67 +  m x 102.67

= 249.34 m

Change in momentum = impulse = force x time

Putting the given values

249.34 m = force x 1 x 10⁻³ ( time = 10⁻³ s )

force = 249.34 m x 10³ poundal .

Here m is mass of the ball in lb .