03/11/21

We want to paint three rooms in a house, each a different color, and we may choose from seven different colors of paint. How many color combinations are possible for the three rooms?

We want to paint three rooms in a house, each a different color, and we may choose from seven different colors of paint. How many color combinations are possible for the three rooms?
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03/03/21

Science heat question
 A 1.9 kg piece of copper metal at 70.0°C is placed in water at 25.0°C. The final temperature of the water and copper was 26.8°C. How much water was there? (kg)[ c_copper = 385 J/(kg°C), c_water =... more
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03/02/21

Is the answer 4?

What is the length of the curve with parametric equations x = t - cos(t), y = 1 - sin(t) from t = 0 tot = π? (20 points) 8 4
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03/02/21

How do you solve?

What is the length of the curve x = y3/2 from y = 0 to y = 4? (4 points)A) None of the choices belowB) C) D)
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03/02/21

calculus question
Convert the parametric equations x = t + 4, y = t2 into a Cartesian equation. y = x2 + 16 y = x2 - 8x + 16
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03/02/21

f(x) = 1 + 2x^2 − x^4
Consider the function below.f(x) = 1 + 2x2 − x4(a) Find the local minimum value(s). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)(b) Find the local maximum... more
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02/03/21

The current 𝐼 amperes in an electrical circuit after 𝑡 seconds can be modelled by 𝐼=𝑡3−6𝑡2+9𝑡, for 0≤𝑡≤3. What is the largest value of 𝐼 in the period 0≤𝑡≤3?
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02/03/21

Mass, weight, universal law of gravitation

Solve for the gravitational force of Venus which has a mass of 4.89 * 10 ^ (2d) kilograms and a radius of 6.05 * 10 ^ 6 meters , using the equation : Gm / (r ^ 2)
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01/27/21

Give a mathematical representation of Coulombs law, F= k q1q2/r^2, where k=9.0*10^9 Nm^2/C^2, describe in words the relationship among electric force, charge, and distance.

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01/22/21

What Is the firt law of thermodynamics

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01/18/21

Find the general solution (x+2y-1)dx-(2x+y-5)dy=0
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01/11/21

a person drops a 2.00 kg ball off a building. what is the force of weight on the ball?
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01/07/21

A 1210 kg rollercoaster car is moving 7 33 m/s. As it approaches the station, brakes slow it down to 1.88 m/s over a distance of 5.29 m. How much work did the brakes do
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12/08/20

Chemistry question

If 81 J of Heath is added to pure gold coin with a mass of 12 g, what is the temperature change? The specific heat capacity of gold is 0.128J/g^C
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12/01/20

Physics- Gravitational Force
The mass of the earth is 5.98 × 1024 kg and the mass of the moon is 7.35 × 1022 kg. If the distance between the earth and the moon is 384,000 km, what is the gravitational force on the moon?
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11/18/20

A book sold 39,600 copies in its first month of release. Suppose this represents 6.7 percent of the number of copies sold to date. How many copies have been sold to date?
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11/12/20

Electrical Circuit Basics
When we connect an R resistor to a battery battery, the resistor's ends voltage is measured at 240 V. When we add 10 Ω to this resistance, the circuit current becomes 5 A, and when 20 Ω is removed,... more
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11/11/20

Find the slope of the tangent line for g(x)=x/(square root(5x+1); for x=1
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11/05/20

Calculate the total relativistic energy of the electron, expressed in picojoules
An electron is travelling at a speed of 0.95 c
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11/04/20

Appropriate formula to find future value
Use the appropriate formula to find the future value (in $) of $700 deposited at the beginning of every six months, for 19 years if a bank pays 4% interest, compounded semiannually. (Round your... more
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09/22/20

Thermodynamics conversion
Convert 35 pints to cavan
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08/26/20

Exponential and log equations
log(x^2)+log(x^4)/log(70x)=3
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07/10/20

Write down a comprehensive note on “The Magnetic Dipole Moment”.

Write down a comprehensive note on “The Magnetic Dipole Moment”. 
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07/10/20

What is λ (mean free path) for the conduction electrons in copper, assuming that their effective speed veff is 1.6 × 106 m/s? [Hint: d=vt]
What is λ (mean free path) for the conduction electrons in copper, assuming that their effective speed veff is 1.6 × 106 m/s? [Hint: d=vt]
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06/25/20

Find f '(a). f(t) = 6t + 6/ t + 9
f(t) = 6t + 6/ t + 9f'(a)=______
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