10/07/21

the explode of the internal pressure

 Labels on aerosol cans caution against incineration because the cans may explode when their internal pressure exceeds 3.00 atm. At what temperature (in °C) will an aerosol can burst if the... more
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10/05/21

Finding the module and orientation of vector B.
Hello,I need help with the following question : The vector A = (2x + 3y) m and the sum of the vectors A+B has a magnitude of 4 m orientated at 120 degrees in relation to the x-axis. Calculate the... more
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10/05/21

When standing on the edge of a cliff that is 125 meters high, you through a phone at an angle of 65.0 degrees above horizontal at a speed of 12.32 meters per second.

-How long is it in the air? -How far does it go in the horizontal direction?-What maximum height does it reach?
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10/05/21

(a) If A is the area of a circle with radius r and the circle expands as time passes, find dA/dt in terms of dr/dt.
(a) If A is the area of a circle with radius r and the circle expands as time passes, find dA/dt in terms of dr/dt.dA/dt = ____ dr/dtb) Suppose oil spills from a ruptured tanker and spreads in a... more
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10/04/21

PLEASE HELPPP ME WITH THIS MATH PROBLEM
Find the domain of the equations. Do not solve! It would be great if you showed step by step process :)square root x-3 + square root x+1 = 3/5-x
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10/03/21

trig help for inverse sin
how do I solve, please explain:sin-1 -√3 / 2The answer is -¶/3 but I don't understand why.Thank you
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10/02/21

The first car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 6.0 m/s , they then have the same kinetic energy.
The first car has twice the mass of a second car, but only half as much kinetic energy. When both cars increase their speed by 6.0 m/s , they then have the same kinetic energy.What were the... more
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10/02/21

What is the minimum work needed to push a 850 -kg car 750 m up along a 9.5 ∘ incline? Ignore friction. Express your answer to two significant figures and include the appropriate units.
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10/02/21

Calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above the Earth's surface if its mass is 1250 kg .
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10/01/21

A biker passes a lamppost at 4.5 m/s. she accelerates down the hill at a constant rate of .40 m/s^2 for 12 seconds. How far does she move down the hill during this time?
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10/01/21

...a 53.71 kg object falls off the top
A 53.71 kg object falls off the top of 77.61 m height. How much work is required to lift the object back to its original position, assuming the lifting is down with a constant velocity.
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10/01/21

...A ball of mass

A ball of mass 7.91 kg moving with speed 5.86 m/s hits a wall and bounces back with speed 6.19 m/s in the opposite direction. What is the change in the ball’s kinetic energy?
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10/01/21

kinetic energy problem
Ford Ranger has a mass of 1140.6 kg and has a speed of 17.54 m/s. What is its kinetic energy?
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10/01/21

...You're riding an amusement park ride
You’re riding an amusement park ride down waterfalls, and you accelerate with a mass of 59 kg a combination of you and the ride from 4.04 m/s to 10.98 m/s in 4 s. How much power does it require?
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10/01/21

Physics Help (Component)
The handle of the lawn mower makes an angle of 45° with the horizontal. A push of 98 N on the handle results in a useful component of _________
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10/01/21

At what time does the particle turn around (the turning points)?
Given s = s(t) with an initial condition s(0) = 0. It’s velocity versus potion is described by the equation v = s2 + 1. At what time (s), if any, does the particle turn around (the turning points)?
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09/29/21

A block starting from rest slides down the length of an 18 m plank with a uniform acceleration of 4.0 m/s. how long does it take for the block to reach the bottom?
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09/29/21

A bus is moving at a speed of 20 m/s, when it begins to slow at a constant rate of 5 m/s^2 in order to stop at a bus stop. if it comes to rest at the bus stop , how far away was the bus from the stop
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09/29/21

a car moving at 10 m/s speeds up uniformly to a speed of 30 m/s in a time of 5 seconds. What was the car's acceleration?
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09/27/21

A 10.00-kg projectile, initially at rest is fired with a force of 7.1 N at an angle of 45.0° with the horizon on the surface of the earth,
A 10.00-kg projectile, initially at rest is fired with a force of 7.1 N at an angle of 45.0° with the horizon on the surface of the earth,. Neglecting any effects of air resistance, what is the... more
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09/26/21

In a traditional wall mounted clock, the second hand makes one revolution in 60.00 s. The length of the second hand is found to be 6 cm.
In a traditional wall mounted clock, the second hand makes one revolution in 60.00 s. The length of the second hand is found to be 6 cm. What is the speed of the end of the second hand? What will... more
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09/05/21

If we react 2,37g of diborane, how many grams of water would we expect to produce
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09/05/21

p and q are both integers.

p and q are both integers. Given the folowing equation:vp = 2aqxwhere v represents velocity in m/s;a represents acceleration in m/s2;and x represents position in m;what are the values of p and q?I... more
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09/05/21

hexagonal volume
You have been brought a hexagonal vase from a crime scene that is filled with blood to 12.0cm above where it rests on the table. Each side of the vase is 5.00cm (measured from the outside surface)... more
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09/03/21

AMDM Question (Mathematics)
Jason is pulling a box across the room. He is pulling with a force of 28 newtons and his arm is making a 43 angle with the horizontal, what is the vertical component of the force he is pulling with?
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