Ace - AI Tutor
Ask Our Educators
Textbooks
My Library
Flashcards
Scribe - AI Notes
Notes & Exams
Download App
Tynneqa Jefferies

Tynneqa J.

Divider

Viewed Questions

One person is looking in a plane mirror at the image of a second person (Figure 24-51). Using a ruler, a protractor, and the law of reflection, show the location of the image as seen by the first person.

One person is looking in a plane mirror at the image of a second person (Figure 24-51). Using a ruler, a protractor, and the law of reflection, show the location of the image as seen by the first person.

College Physics

The angle between the Sun and a rescue aircraft is $54^{\circ} .$ What should be the angle of incidence for sunlight on a plane mirror so that the rescue pilot sees the reflected light?

The angle between the Sun and a rescue aircraft is $54^{\circ} .$ What should be the angle of incidence for sunlight on a plane mirror so that the rescue pilot sees the reflected light?

Physics

A step-up transformer has 30 turns on the primary coil and 750 turns on the secondary coil. If this transformer is to produce an output of 4800 $\mathrm{V}$ with a 15 -mA current, what input current and voltage are needed?

A step-up transformer has 30 turns on the primary coil and 750 turns on the secondary coil. If this transformer is to produce an output of 4800 $\mathrm{V}$ with a 15 -mA current, what input current and voltage are needed?

Physics

Suppose that points $\mathrm{A}$ and $\mathrm{B}$ in Figure $21-41$ are connected to a 12 $\mathrm{-V}$ battery. Find the power dissipated in each of the resistors assuming that $R=65 \Omega .$

Suppose that points $\mathrm{A}$ and $\mathrm{B}$ in Figure $21-41$ are connected to a 12 $\mathrm{-V}$ battery. Find the power dissipated in each of the resistors assuming that $R=65 \Omega .$

Physics

Questions asked

ANSWERED

Eduard Sanchez verified

Numerade educator

The point charges in the figure have the following values: q1=+2.1μC, q2=+6.3μC, q3=−0.89μC. Suppose that the magnitude of the net electrostatic force exerted on the point charge q2 in the figure is 0.64 N . Find the distance d .What is the direction of the net force exerted on q2 the figure?

View Answer
 divider
ANSWERED

Baskar P verified

Numerade educator

A U-shaped tube is filled mostly with water, but some vegetable oil has been added to both sides of the U tube. On the right side of the tube, the depth of oil is 5.60 cm . On the left side of the tube, the depth of the oil is 2.60 cm . The density of the water is 1.00×103kg/m3, and the density of the vegetable oil is 9.20×102kg/m3. Find the difference in fluid level between the two sides of the tube.

View Answer
 divider
ANSWERED

Abid Hussain verified

Numerade educator

Since the system is at rest, it is not accelerating in rotational motion, so there are no net torques, thus we have Σ???? = 0. Write an equation using the torques about the elbow for the horizontal boom. Do not insert any numerical values! Solve the torque equation for FB, the force provided by the muscle. i. Solve the problem algebraically such that you can substitute different values for lengths, masses, etc. as you do different trials. Substitute your measured masses and lengths to get FB, calc.

View Answer
 divider
ANSWERED

Frank Deng verified

Numerade educator

When the Earth, Moon, and Sun form a right triangle, with the Moon located at the right angle, as shown in the figure(Figure 1), the Moon is in its third-quarter phase. (The Earth is viewed here from above its North Pole.) Find the magnitude of the net force exerted on the Sun. Find the direction of the net force exerted on the Sun. Give the direction relative to the line connecting the Sun and the Moon.

View Answer
 divider
ANSWERED

Hubert Agamasu verified

Numerade educator

How will you find the center of mass of the forearm boom? Using Figure write down an equation that balances the torques about the pivot point of the elbow (point masses and distances). the force of the muscle, and sin θ Use measured values only (i.e. in agreement with theoretically calculated force of Would measured force of (124+04)N (113+03)N? Show your work

View Answer
 divider
ANSWERED

Adriano Chikande verified

Numerade educator

A dumbbell has a mass m on either end of a rod of length 2a. The center of the dumbbell is a distance r from the center of the Earth, and the dumbbell is aligned radially. If r≫a, the difference in the gravitational force exerted on the two masses by the Earth is approximately 4GmMEa/r3. (Note: The difference in force causes a tension in the rod connecting the masses. We refer to this as a tidal force.) Suppose the rod connecting the two masses m is removed. In this case, the only force between the two masses is their mutual gravitational attraction. In addition, suppose the masses are spheres of radius a and mass m=43πa3ρ that touch each other. (The Greek letter ρ stands for the density of the masses.) Find the distance from the center of the Earth, r , for which the gravitational force found in part A is equal to the tidal force ( 4GmMEa/r3 ). This distance is known as the Roche limit. Express your answer in terms of the variables ME , ρ , and appropriate constants.

View Answer
 divider
ANSWERED

Saikat Chatterjee verified

Numerade educator

A dumbbell has a mass m on either end of a rod of length 2a. The center of the dumbbell is a distance r from the center of the Earth, and the dumbbell is aligned radially. If r≫a, the difference in the gravitational force exerted on the two masses by the Earth is approximately 4GmMEa/r3. (Note: The difference in force causes a tension in the rod connecting the masses. We refer to this as a tidal force.) Suppose the rod connecting the two masses m is removed. In this case, the only force between the two masses is their mutual gravitational attraction. In addition, suppose the masses are spheres of radius a and mass m=43πa3ρ that touch each other. (The Greek letter ρ stands for the density of the masses.) Write an expression for the gravitational force between the masses m . Express your answer in terms of the variables a , ρ , and appropriate constants

View Answer
 divider
INSTANT ANSWER

A soccer ball is kicked with a speed of 17.5 m/s at an angle of 47.5 ? above the horizontal. For the steps and strategies involved in solving a similar problem, you may view the following Example 4-12 video:

View Answer
 divider
ANSWERED

Nishant Kumar verified

Numerade educator

To visit your favorite ice cream shop, you must travel 420 m west on Main Street and then 960 m south on Division Street. Suppose you take 47 s to complete the 420- m displacement and 78 s to complete the 960- m displacement. What is the magnitude of your average velocity during this 125-second period of time?

View Answer
 divider