12,834 Answered Questions for the topic physics

Physics

05/02/22

What is the charged stored by a 15 nF capacitor, if it is connected to a 4.5 V battery
A. 0.3 nCB. 3.33 nCC. 6.75 nCD. 67.5 nC
Follows • 1
Expert Answers •1
Physics

05/02/22

What are the possible reasons why we would use multiple resistors instead of just one resistor with a resistance equal to the equivalent resistance of the circuit?
I. A resistor of the required size is not availableII. Required size are always cheap and availableIII. We need to dissipate the heat generatedIV. We want to minimize the cost of resistorsA. I,... more
Follows • 1
Expert Answers •1
Physics

05/02/22

If the electric field intensity is 5 N/C and the force applied to a conductor is 15 N, what is the charge in the conductor?
A. 75 CB. 7.5 CC. 3 CD. 0.33 C
Follows • 1
Expert Answers •1
Physics

05/02/22

A 20 ohms resistor is powered by a 3 V battery. How much current flows?
A. 0.15 AB. 6.7 AC. 7 AD. 60 A
Follows • 1
Expert Answers •1
Physics

05/02/22

It is anything that keeps the current from flowing
A. resistanceB. currentC. conductorD. voltage
Follows • 1
Expert Answers •1
Physics

05/02/22

What is the voltage across the plate of the capacitor if the capacitance is 5 µF and the charge stored is µC?
A. 175 VB. 7 VC. 3.5 VD. 0.14 V
Follows • 1
Expert Answers •1
Physics

05/02/22

If q1 and q2 have the same charge of 60 µC with a magnitude of the force between them is 500 N, what is the distance separated these two charges?
Follows • 2
Expert Answers •1
Physics

05/01/22

Coal mine Carbon
While exploring a coal mine, scientists found plant fossils which had been preserved by an earthquake in the ceiling of the mine. Samples taken from one of the fossils had carbon‑14 activities... more
Follows • 1
Expert Answers •1
Physics

05/01/22

What is the daughter nucleus (nuclide) produced when At217 undergoes alpha decay? Replace the question marks with the proper integers or symbols.
What is the daughter nucleus (nuclide) produced when  undergoes alpha decay? Replace the question marks with the proper integers or symbols.
Follows • 1
Expert Answers •1
Physics

05/01/22

circular motion
An ultracentrifuge accelerates from rest to 98300 rpm in 1.85 min.ω = 98300 rpmt = 1.85 minl = 9.9 cma) what is the angular acceleration in rad/s2?b) what is the tangential acceleration of a point... more
Follows • 1
Expert Answers •1
Physics

04/30/22

circular motion
this problem confused meA disk with an initial angular velocity ω0 = 3.5 rad/s experiences a constant angular acceleration of α = 8.5 rad/s2 for a time period t = 25 s. Please answer the following... more
Follows • 1
Expert Answers •1
Physics

04/29/22

Physics question
A bomb initially at rest on a smooth, horizontal surface is exploded into three pieces. Two pieces fly off horizontally at 55.4angle to each other, a 2.50 kg piece at 22.0 m/s and a 3.20 kg piece... more
Follows • 1
Expert Answers •1
Physics

04/29/22

Physics energy question
An electric motor, rated at 45.0 kW with an efficiency of 0.79, provides power while lifting a 1200 kg elevator. The motor can lift eight passengers (at constant speed) to a height of 35.0 m in... more
Follows • 2
Expert Answers •1
Physics

04/29/22

Calculate the (a) Total Range, (b)Total time of flight and (c) Maximum height reached by the projectile
A projectile was launched with an initial velocity of 4 ms from a height of 8 meters at an angle of 40-degrees from the horizontal. Calculate the (a) Total Range, (b)Total time of flight and (c)... more
Follows • 1
Expert Answers •1
Physics

04/29/22

determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 19.0g
the 20-g centrifuge at nasa's ames research center in mountain view, california, is a horizontal, cylindrical tube 58 ft long and is represented in the figure below. assume an astronaut in training... more
Follows • 1
Expert Answers •1

04/29/22

Physics impulse and momentum question
A Figure skater of mass 70kg is gliding at a velocity of 3.5 m/s [E]. Their skating partner, of mass 45 kg, skates at a velocity of 4.2 m/s [N] when they jump into the first skater’s arms.... more
Follows • 1
Expert Answers •1
Physics Science

04/29/22

PHYSICS DOUBT -
We know why the sky is blue, that's because the atmosphere contains particles that scatter the blue light, making the sky blue. But at night, why is the sky not blue or any other colour in the... more
Follows • 1
Expert Answers •1
Physics

04/29/22

Please help me T-T.
Show complete solutionA golf ball was hit and projected at an angle of 60˚ with the horizontal. If the initial velocity of aball was 50 m/s (neglecting air friction).a. Calculate the vertical... more
Follows • 1
Expert Answers •1
Physics Ap Physics

04/28/22

What is the maximum speed?
A mass and spring system consists of a 2.5 kg mass attached to a 12.5 N/m spring. The system is pulled to a position that is 1.6 cm from the equilibrium and released from rest. What is the maximum... more
Follows • 0
Expert Answers •1
Physics

04/27/22

A point charge, q = -0.35 nC, is fixed at the origin. Where must a proton be placed in order for the electric force acting on it to be exactly opposite to its weight? (Let the y axis be vertical.)

I’m confused on how to get this question started. We haven’t done one like it in class. I just need at least a place to start and a bit of an explanation of what to do. If someone could help, that... more
Follows • 1
Expert Answers •1
Physics

04/27/22

Block Held by Spring
The coefficient of static friction can be determined using the following procedure. A block is held against a vertical wall by compressing a spring attached to the block.If the spring has a spring... more
Follows • 1
Expert Answers •1
Physics Science

04/27/22

Find the maximum height h attained
‎A bullet of ma‎ss m= 7.50 [g] is fire‎d horiznt‎ally with a spe‎ed v= 549 [m/s] in‎to a b‎ob of a b‎allistic pend‎ulum of ma‎ss M= 1.20 [kg]. Fin‎d the maxi‎mum h‎eight h attai‎ned by the bo‎b if... more
Follows • 1
Expert Answers •1
Physics Science

04/27/22

Wh‎at are the spe‎eds of the two pu‎cks after the colli‎sion?
A pu‎ck with m‎ass mA= 3.14 [g] mo‎ves east‎ward with spe‎ed vA= 6.25 [m/s]. It c‎ollides with an‎other p‎uck of ma‎ss mB= 2.99 [g] an‎d is m‎oving no‎rthward with spe‎ed vB=3.65 [m/s]. Aft‎er the... more
Follows • 2
Expert Answers •1
Physics Science

04/27/22

Wh‎at is the sp‎eed of the ba‎ll jus‎t be‎fore it re‎aches the gro‎und
Jeric, a profes‎sional roo‎ftop futbo‎l p‎layer, kic‎ked a 0.550 [kg] b‎all of‎f a r‎ooftop th‎at is 90.0 [m] ‎off the gr‎ound, at 20‎.0 [m/s] ori‎ented 30.0º a‎bove his horizo‎n. Hi‎s p‎al,... more
Follows • 2
Expert Answers •1

04/27/22

In the figure R1 = 5.65 Ω, R2 = 17.0 Ω, and the ideal battery has emf ε = 13.5 V. (a) What is the magnitude of current i1? (b) How much energy is dissipated by all four resistors in 2.36 min?
In the figure R1 = 5.65 Ω, R2 = 17.0 Ω, and the ideal battery has emf ε = 13.5 V. (a) What is the magnitude of current i1? (b) How much energy is dissipated by all four resistors in 2.36 min?
Follows • 2
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.