04/25/24

A bicycle wheel with radius 0.3 m rotates from rest to 2.1 rev/s in 5.3 s. What is the magnitude (in m/s2) of the total acceleration vector at the edge of the wheel at 2.0 s?
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04/24/24

If the block has a temperature of 22.4∘ C at the top of the ramp, what is the temperature of the block when it reaches the bottom of the ramp?

Suppose a 26.4 kg block of aluminum (c = 900 J/(kg⋅∘ C)) is being pushed down a steep ramp that is inclined at an angle of 59∘ from the horizontal by a 145 N force directed vertically straight down... more
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04/23/24

Physics Frequency

A weight suspended from a spring is seen to bob up and down over a distance of 18 cmcm twice each second.What is its frequency? What is its period? What is the amplitude?
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04/23/24

What pressure is required to reduce 59 mL of a gas at standard conditions to 15 mL at a temperature of 20◦C? Answer in units of atm.
What pressure is required to reduce 59 mL of a gas at standard conditions to 15 mL at a temperature of 20◦C? Answer in units of atm.
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04/19/24

algebra applications

Yamil purchased a copy machine for $2100 and a one-year maintenance protection plan that costs 2 cents per copy made. If he spends a total of $2462 in a year, which includes the cost of the machine... more
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04/19/24

Calculate the percentage yield for SiO2
In the following reaction, oxygen is the excess reactant.SiCl4 + O2 → SiO2 + Cl2The table shows an experimental record for the above reaction. Experimental RecordTrialStarting Amount of... more
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04/19/24

If you could choose any diameter, what would be the dimensions for a 330 mil can that would use the least amount of aluminum?
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04/16/24

Application of Antiderivatives in PVA (position, velocity, acceleration)
A child throws a ball straight up. If the ball is to reach a height of 9.8m, what is the minimum initial velocity that must be imparted to the ball? Assume the initial height of the ball is 1m.... more
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04/15/24

Physics Voltage Transformer

An ideal transformer has 50 turns in its primary and 400 turns in its secondary. 14-VV ac is connected to the primary. What is the voltage available at the secondary? What is the current in a... more
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04/15/24

Physics Electric transformer

A model electric train requires 6 VV to operate. When it is connected to a 120-VV household circuit, a transformer is needed. If the primary coil of the transformer has 260 turns, find how many... more
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04/15/24

An object attached to a coiled spring is pulled down 5 centimeters from its rest position and released. If the motion is simple harmonic in nature, with a period of seconds
An object attached to a coiled spring is pulled down 5 centimeters from its rest position and released. If the motion is simple harmonic in nature, with a period of seconds, answer the following... more
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04/12/24

I need help finding the velocity of a 21.6 g marble after it collides. The scenario is as follows:

21.6 g marble sliding to the right at 54.8 cm/s overtakes and collides elastically with a 10.8 g marble moving in the same direction at 13.7 cm/s. After the collision, the 10.8 g marble moves to... more
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04/11/24

Physics Transformer relationships

The primary of a transformer connected to 150 VV has 100 turns. The secondary has 10 turns. Find the output voltage. This is a step-down transformer.
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04/11/24

Physicis Change in heat temp
The specific heat capacity of steel is 450 J/kg⋅∘CJ/kg⋅∘C. Find the amount of heat that is needed to raise the temperature of a 13-kgkg piece of steel from 0 ∘C to 130 ∘C.How does this compare with... more
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04/11/24

Phyisics Net Force

A rocket of mass 70000 kg undergoes an acceleration of 2.2 m/s2m/s2. Find the net force acting on it. I am not sure how to set up this problem or if I got the right answer.
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04/10/24

Identify the center and radius of y^2-12x=-20y-x^2-59
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04/10/24

Determine the probability that the first candy drawn is brown, the second is orange, and the third is yellow.

A snack-size bag of M&Ms candies is opened. Inside, there are 12 red candies, 7 blue, 7 green, 17 brown, 4 orange, and 10 yellow. Three candies are pulled from the bag in succession, without... more
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04/10/24

what is the probability of drawing 2 cards in succession
What is the probability of drawing 2 cards in succession (without replacement) from a standard deck and having them both be face cards? Round to the nearest thousandth.
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04/10/24

Determine the probability of the following
Two dice are rolled. Determine the probability of the following. ("Doubles" means both dice show the same number. Enter your probability as a fraction.) rolling a number greater than 5 or... more
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04/10/24

A moving object has a kinetic energy of 109 J and a momentum with magnitude of 40.0 kg·m/s. What is the mass and speed of the object?
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04/10/24

A moving object has a kinetic energy of 109 J and a momentum with magnitude of 40.0 kg·m/s. What is the mass and speed of the object?
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04/10/24

A helium-filled balloon at sea level has a volume of 2.3 L at 0.987 atm and 34°C.

If it is released and rises to an elevation at which the pressure is 0.900 atm and the temperature is 31°C, what will be the new volume of the balloon?
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04/10/24

A rigid plastic container holds 1.00 L methane gas at 660 torr pressure when the temperature is 21.1°C. How much more pressure will the gas exert if the temperature is raised to 43.9°C?
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04/09/24

Chemical equation stoich

How much C2H4N2 could be expected from the reaction of 14.1 g CO2, 2.17 g NH3, and 1.73 g CH4?
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04/07/24

Consider the region R bounded by y = x^2 and y = 2 − x^2.
Consider the region R bounded by y = x2 and y = 2 − x2.(a) Sketch the graphs of the two curves and shade the region R.(b) Find the volume of the solid obtained by revolving the region R about... more
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