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2 years ago

12

If you pull on a box with a force of 5 N and your teacher pulls on the same box with a force of 5 N in the opposite direction, t

he net force on the box is _______. View Available Hint(s)for Part A 0 N 5 N 50 N 10 N

1 answer:

antiseptic1488 [7]2 years ago

6 0

Answer:

A. 0N

Explanation:

assume you're pulling in the positive direction, then we have 5 + (-5) = netforce = 0N

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The element oxygen forms molecules that each contain two oxygen atoms. The elements carbon and oxygen form molecules that each c

disa [49]

Answer:

The elements carbon and oxygen form molecules that each contain one carbon atom and two oxygen atoms is TRUE.

Explanation:

The elements carbon and oxygen form molecules that each contain one carbon atom and two oxygen atoms is true because a compound can only be formed from the combination of two or more elements but not from one element.

The molecule formed from one carbon element (C) and 2 oxygen elements (O) is CO2. CO2 which is known as carbon(IV)oxide is a compound which is made up of carbon and oxygen elements.

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4 years ago

A 591 μF capacitor is discharged through a resistor, whereby its potential difference decreases from its initial value of 88.5 V

Stels [109]

Answer:

2.6 kilo Ohm

Explanation:

Capacitance, C = 591 μF = 591 x 10^-6 F

Vo = 88.5 V

V = 11.9 V

t = 3.09 s

Let the resistance is R.

$V = V_{0}e^{\frac{-t}{RC}}$

$\frac{11.9}{88.5} = e^{\frac{-t}{RC}}$

$0.135 = e^{\frac{-t}{RC}}$

Take natural log on oth the sides

ln 0.135 = - 3.09 / RC

RC = 1.545

R = 1.545 / ( 591 x 10^-6)

R = 2614.2 ohm

R = 2.6 kilo Ohm

Thus the resistance is 2.6 kilo Ohm.

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3 years ago

A spring with a pointer attached is hanging next to a scale marked in millimeters. Three different packages are hung from the sp

SOVA2 [1]

solution;

$the expression for force applied on the spring due to the load is\\f=k\Delta x\\here,\Delta x is the extension in the spring due to appling force\\given three case as following\\110N=k(40-x_{o})----------1\\240N=k(60-x_{o})----------2\\w=k(30-x_{o})-------------3\\$ $To calculate the accrual length of the spring,solve th equation 1 and 2\\\frac{110N}{240N}=\frac{k(40-x_{o})}{k(60-x_{o})}\\0.458=\frac{k(40-x_{o})}{k(60-x_{o})}\\0.458(60mm-x_{o})=(40mm-x_{o})\\x_{o}(1-0.458)=(40-60(0.458))mm\\x_{o}\frac{12.52}{0.542}\\=23.1mm\\to calculate the force on the spring in case,\\solve the equation 1 and 2\\\frac{110}{w}=\frac{k(40-x_{o})}{k(60-x_{o})}\\\frac{110}{w}=\frac{(40mm-23.1mm)}{30mm-23.1mm}\\w=\frac{110}{2.45}=44.9N$

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3 years ago

Radiation, conduction, and convection are methods of energy transfer. Of these methods, radiation is the only one in which energ

8_murik_8 [283]

C. Space.

Radiation is a process by which heat energy is transferred through space.

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3 years ago

Read 2 more answers

7. A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground.

miv72 [106K]

The kinetic energy, potential energy and total mechanical energy possessed by the skydriver are 1.5 × 10⁵ Joule, 6.7 × 10⁵ Joule and 8.2 × 10⁵ Joule respectively.

To find the answer, we need to know about the expression of kinetic energy and potential energy.

<h3>What are the expressions of kinetic energy and potential energy?</h3>

Mathematically, kinetic energy= 1/2 × mass × velocity²
Gravitational potential energy near the earth surface= mass × g × height on the earth surface

<h3>What's the kinetic energy, potential energy and total mechanical energy of the 78kg skydriver at 870 m on earth surface with 62 m/s velocity?</h3>

Kinetic energy= 1/2 × 78 × 62² = 1.5 × 10⁵ Joule
Potential energy= 78×9.8×870= 6.7× 10⁵ Joule

<h3>What's the total mechanical energy?</h3>

Mechanical energy= kinetic energy+ potential energy
1.5 × 10⁵ Joule + 6.7× 10⁵ Joule = 8.2× 10⁵ Joule

Thus, we can conclude that the kinetic energy, potential energy and total mechanical energy possessed by the skydriver are 1.5 × 10⁵ Joule, 6.7 × 10⁵ Joule and 8.2 × 10⁵ Joule respectively.

Learn more about the kinetic energy, potential energy and mechanical energy here:

brainly.com/question/17051553

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2 years ago