Science

PhysicsQ&A LibraryWhen a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round your answers to two decimal places.)(a) What is the temperature of the drink after 30 minutes?°C(b) When will its temperature be 12°C?minQuestion

Asked Dec 12, 2019

10 views

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room its temperature has increased to 10°C. (Round your answers to two decimal places.)

(a) What is the temperature of the drink after 30 minutes?

°C

(b) When will its temperature be 12°C?

min

°C

(b) When will its temperature be 12°C?

min

Step 1

(a)

According to Newton’s law of cooling, says that the temperature follows differential equation.

Step 2

Solve the differential equation with the given conditions and rewrite the equation.

Step 3

Apply the initial condition T(0)=5

Now...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Rigid rods of negligible mass lying along the y axis connect three particles. The system rotates abo...

A: a)the moment of inertia about x-axis is

Q: Consider a 0.674-m long tube, open at both ends. What is the fundamental resonance frequency, in her...

A: We know:

Q: A 2.0-kilogram cart moving due east at 6.0 meters per second collides with a 3.0-kilogram cart movin...

A: The total momentum must conserve before and after the collision

Q: 134. As an object falls freely toward Earth, the object's momentum (1) decreases (2) increases (3) r...

A: Object falls freely toward earth.

Q: Please show work

A: Given,

Q: A student attaches a f = 3.5 kHz oscillator to one end of a metal rail of length L = 19 m. The stude...

A: Write the expression for the time period in terms of frequency of the oscillator.

Q: A mechanic pushes a 2.90 ✕ 103-kg car from rest to a speed of v, doing 5,490 J of work in the proces...

A: Step 1Work done on an object is dependent on force and displacement as It can also be given as the c...

Q: 2. To measure the static friction coefficient between a 1.6-kg block and a vertical wall, the setup ...

A: Given information:Mass of the block (m) = 1.6 kgSpring constant of the spring (k) = 510 N/mThe compr...

Q: A 6-pack of 12 fl. oz. soda cans is placed inside an insulated container. Ice is added to the cooler...

A: Click to see the answer