Start your trial now! First week only $4.99!*arrow_forward*

Question

A mobile is shown in the figure. The horizontal supports have negligible mass. Assume that all the numbers given in the figure are accurate to two significant figures. What mass *M* is required to balance the mobile?

18 g |

30 g |

90 g |

60 g |

36 g |

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: Assume that there are 100 million passenger cars in the United States and that the average fuel cons...

A: The average fuel efficiency,

Q: Light travels from air into a material of refractive index n. Find the value ofn for the material Gi...

A: Given : θ1 = 40° & θ2 = 74°

Q: The half-life of radio-active isotopes is 140 days. How many days would it take for the activity of ...

A: Given data: the half life of radio-active isotope, t1/2 = 140 days

Q: Understand the rules of vector addition, subtraction, and multiplication.Apply graphical methods of ...

A: The direction in vector representation always matters. The displacement of point from point 1 to poi...

Q: A capillary tube is dipped in water in a state of weightlessness. Will water rise in tube?

A: Given: capillary tube

Q: A ladder 9.00 m long leans against the side of a building. If the ladder is inclined at an angle of ...

A: Given: length of ladder, L = 9 m Angle with horizontal,A = 75 degree

Q: A whistle you use to call your hunting dog has a frequency of 42 kHz, but your dog is ignoring it. Y...

A: Given: frequency, f = 42 Hz Apparent frequency, f' = 40 Hz

Q: Show that the thermal resistance of a rectangular enclosure can be expressed as R = Lc /(Ak Nu), whe...

A: Calculate the thermal resistance of the slab using the relation,

Q: The wavelengths of the Paschen series for hydrogen are given by (a) Calculate the wavelengths of the...

A: Given: Paschen series first three lines

Q: A satellite orbits the earth instead of flying off into space because a. gravity continuou...

A: Revolution of satellite around the earth :

Q: Using Kirchoff rules and calculate currents

A: Click to see the answer

Q: A bicycle wheel has a diameter of 64.0 cm and a mass of 1.80 kg. Assume that the wheel is a hoop wit...

A: Click to see the answer

Q: A river flowing southward has a current of 7 miles per hour. A motorboat in still water maintains a ...

A: Click to see the answer

Q: A heart pacemaker fires 72 times a minute, each time a 25.0-nF capacitor is charged (by a battery in...

A: The time needed to charge capacitor up to 63.2 % of its applied voltage through a resistor is calle...

Q: A charge +16 e moves from an equipotential P to equipotential Q. The equipotential P and Q have an e...

A: Given data charge q = 16 e electric potential of equipotential P, Vp = 17 kV = 17000 V electric p...

Q: A fireman d = 50.0 m away from a burning building directs a stream of water from a ground-level fire...

A: The taken time is,

Q: Please show all steps in clear handwriting. No cursive if possible.

A: Consider the figure.

Q: Q2/ Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and t...

A: Given,

Q: Mechanic Physics: A block of mass m = 2.00 kg is dropped from height h = 57.0 cm onto a spring of sp...

A: Click to see the answer

Q: 4. A mass of 5 kg stretches a spring 10 cm. The mass is acted on by an external force of 10 sin(t/2)...

A: 4.

Q: Answer the following questions for projectile motion on level ground assuming negligible air resista...

A: Given: A projectile motion

Q: A 0.60-kg particle has a speed of 2.0 m/s at point A and a kinetic energy of 7.5 J at point B. What ...

A: Given: mass, m = 0.6 kg velocity at A, vA = 2 m/s Kinetic energy at B, KB = 7.5 J

Q: A transformer on a pole near a factory steps the voltage down from 3 600 V (rms) to 120 V (rms). The...

A: Click to see the answer

Q: A strong magnet attracts a paper clip to itself with a certain force. Does the paper clip exert a fo...

A: According to Newton’s third law, the paper clip will also exert equal amount of force on magnetic.

Q: Suppose you have a sample of radioactive material that decays with a time constant of 60 minutes. If...

A: Click to see the answer

Q: What is the difference between a hypothesis and a question?

A: A question is based on scientific theory. Again scientific theory is always accepted since it is tes...

Q: A force tends to cause an object to accelerate.The force and the resulting acceleration have ...

A: Click to see the answer

Q: Mount Everest, at 29,028 feet, is the tallest mountain onthe Earth. What is its height in kilometers...

A:

Q: (a) Write an expression relating the kinetic energy KE of the electron and the potential energy PE i...

A: a) The Coulomb force between the electron and the nucleus provides the centripetal force of the elec...

Q: The velocity of air molecules is about 500ms-1 . But still the smell of scent spreads very slowly. W...

A: The velocity of air molecules is about 500m/s but still the smell of scent spreads very slowly.

Q: An induction stove heats a pot with a coil carrying an alternating current located beneath the pot (...

A: According to Faraday’s law of induction, the effect of self-induction will be on the device itself. ...

Q: Compare the kinetic energy of a 20,000-kg truck moving at 110 km/h with that of an 80.0-kg astronaut...

A: Given: M = 20000 kg V = 110 km/h = 30.56 m/s m = 80 kg v = 27500 km/h = 7638.89 m/s

Q: What effect does the electrostatic force have?

A: Click to see the answer

Q: A copper rod and an aluminum rod of equal diameter are joined end to end in good thermal contact. Th...

A: Given: T1 = 100 degree C T2 = 0 degree C T = 50 degree C length of copper rod, Lc = 0.15 m therm...

Q: For flow over a plate, the variation of velocity with vertical distance y from the plate is given as...

A: The expression for the velocity distribution,

Q: Could you help with A and B?

A: A. 1. Momentum of boat A is Momentum of boat B is

Q: Consider the case when the constant A=3 and τ=4. Plot the graph of y=3e-t/4

A: Click to see the answer

Q: The generator coil shown is rotated through one-fourth of a revolution (from θ = 0º to θ = 90º ) in ...

A: The equation for the average induced emf is

Q: Only two forces act on an object (mass = 4.45 kg), as in the drawing. Find the (a) magnitude and (b)...

A: Click to see the answer

Q: Three polarizing plates whose planes are parallel are centered on a common axis. The directions of t...

A: The intensity of light transmitted from the first plate is The transmitted light from the first pla...