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3 years ago

A net force acting on a 5.0 kg box produces an acceleration of 4.2 m/s2. What

Mathematics

2 answers:

liq [111]3 years ago

6 0

Answer:

14 N

Step-by-step explanation:

Let the mass of the box be m.

F = ma → F = 5 x 4.2 = 21 N

When mass = 2.8 kg, let the acceleration is a. For same force:

=> 21 = a x 2.8

=> 21/2.8 = a

=> 7.5 m/s² = a

Mashcka [7]3 years ago

3 0

Answer:

7.5M/s^2

Step-by-step explanation:

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marcy guessed the number of hershey kisses in the school jar. since she guessed correctly, she got to keep all of the candy. she

zaharov [31]

Answer:

118.............................

6 0

3 years ago

What two other measurements can i do? ( screenshot below )

Nitella [24]

Answer:

see below

Step-by-step explanation:

First one 122 m is .122 km is 12200 cm

second one is 116 cm is 1.16 m is 1160 mm

5 0

2 years ago

A tanker that ran aground is leaking oil that forms a circular slick about 0.2 foot thick. To estimate the rate dV/dt (in cubic

blondinia [14]

Answer:

dV/dt = 155.74 ft^3/minute

Step-by-step explanation:

Volume V = Area × thickness

Area A= πr ^2

Thickness = 0.2 ft

Volume V = 0.2A = 0.2πr^2

V = 0.2πr^2

Differentiating both sides;

dV/dt = 0.2π × 2r dr/dt = 0.4πr.dr/dt

Given;

r = 400 ft

dr/dt = 0.31 ft/minute

π = 3.14

Substituting the values

dV/dt = 0.4πr.dr/dt = 0.4 × 3.14 × 400 × 0.31

dV/dt = 155.74 ft^3/minute

8 0

3 years ago

Read 2 more answers

Show that sin (30°) = 1/2

Natali [406]

Answer:

Geometric proof in explanation.

Step-by-step explanation:

Draw an equilateral triangle.

A equilateral triangle has it's sides all congruent and all it's angles measures 60 degrees.

We are going to draw a line segment to cut the equilateral triangles into two congruent right triangles. I will do this in the attachment with p being positive.

You can see we will get 30-60-90 triangles.

We don't need to find the adjacent measurement to the angle whose measurement is 30 degrees since sine is opposite over hypotenuse.

$\sin(30^\circ)=\frac{\frac{p}{2}}{p}=\frac{p}{2} \cdot \frac{1}{p}=\frac{1}{2}$

$\sin(30^\circ)=\frac{1}{2}$

7 0

3 years ago

Brayden and Aubrey are both driving along the same highway in two different cars to a stadium in a distant city. At noon, Brayde

USPshnik [31]

Answer:

B(t) = -30t + 280

A(t) = -40t + 340

(Screenshot of graph is attached below)

They will be the same distance away from the stadium after 6 hours.

Step-by-step explanation:

4 0

3 years ago