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Shivam Yadav
Subject: Physics
, asked on 23/8/20
explain time travel
Answer
1
Saumya
Subject: Physics
, asked on 21/8/20
A passenger train of length 60 m travels at a speed of 80 km/hr.
Another freight train of length 120 m travels at a speed of
30 km/h. The ratio of times taken by the passenger train to
completely cross the freight train when: (i) they are moving
in same direction, and (ii) in the opposite directions is:
I)11/5
II) 5/2
III) 3/2
IV) 25/11
Answer
1
Saumya
Subject: Physics
, asked on 21/8/20
An air-conditioning unit is fastened to a roof that slopes at an angle of
35? above the horizontal . Its weight is a force on the air
conditioner that is directed vertically downward. In order that the
unit not crush the roof tiles, the component of the unit?s weight perpendicular to the roof cannot exceed 425 N. (One newton, or 1 N, is
the SI unit of force. It is equal to 0.2248 lb.) (a) What is the maximum allowed weight of the unit? (b) If the fasteners fail, the unit
slides 1.50 m along the roof before it comes to a halt against a ledge.
How much work does the weight force do on the unit during its slide
if the unit has the weight calculated in part (a)? As we described in
Section 1.10, the work done by a force on an object that undergoes
a displacement s is W=F.s
Answer
1
Saumya
Subject: Physics
, asked on 21/8/20
Three players on a reality TV show are brought to the center of a
large, flat field. Each is given a meter stick, a compass, a calculator, a shovel, and (in a different order for each contestant) the following three displacements:
72.4 m, 32.0? east of north
57.3 m, 36.0? south of west
17.8 m due south
The three displacements lead to the point in the field where the
keys to a new Porsche are buried. Two players start measuring
immediately, but the winner first calculates where to go. What
does she calculate?
Answer
1
Saumya
Subject: Physics
, asked on 21/8/20
After an airplane takes off, it travels 10.4 km west, 8.7 km north, and 2.1 km up. How far
is it from the takeoff point?
Answer
1
Saumya
Subject: Physics
, asked on 21/8/20
The density of a material in SI unit of is 128 kg m=? In
certain units in which the unit of length is 25 cm and
the unit of mass is 50 g, the numerical value of density
of the material is:
(1) 40 (2) 16 = (3) 640?s (4): 410
Answer
1
Saumya
Subject: Physics
, asked on 20/8/20
Block A of mass 2m, B and C each of mass m are in equilibrium and at rest shown in
the figure. The spring balance, pulley and strings are mass less. Now, a force mg is
applied on block C in downward direction. Find the new reading of spring balance.
Assume all pulleys to the frictionles.( I am not able to send the diagram )
Answer
1
Saumya
Subject: Physics
, asked on 20/8/20
Block A of mass 2m, B and C each of mass m are in equilibrium . The spring balance, pulley and strings are mass less. Now, a force mg is
applied on block C in downward direction. Find the new reading of spring balance.
Assume all pulleys to the frictionless.
Answer
2
🌟lucky Chaudhary🌟
Subject: Physics
, asked on 17/8/20
Some major problems facing by people and how we can solve it.. kindly provide me an idea.
Answer
1
🌟lucky Chaudhary🌟
Subject: Physics
, asked on 17/8/20
Kindly provide me an innovative idea which would be beneficial for society and is not utilised by anyone..plzz
Answer
2
Mohit Kumar
Subject: Physics
, asked on 12/8/20
if total solar energy received by earth in a day is 15.6 ? 10^18 kj find the radius of earth
Answer
1
Anushka Pankhuri
Subject: Physics
, asked on 31/7/20
Plz ans my question .......
Answer
2
Shrey Hirenbhai Modi
Subject: Physics
, asked on 29/7/20
Please answer Question. 12 and aso justify it.
Answer
2
Shrey Hirenbhai Modi
Subject: Physics
, asked on 29/7/20
Choose the correct option and justify
the answer.
Answer
4
Shrey Hirenbhai Modi
Subject: Physics
, asked on 29/7/20
Please answer it and also explain/justify it. Please.
Answer
3
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What are you looking for?
Another freight train of length 120 m travels at a speed of
30 km/h. The ratio of times taken by the passenger train to
completely cross the freight train when: (i) they are moving
in same direction, and (ii) in the opposite directions is:
I)11/5
II) 5/2
III) 3/2
IV) 25/11
35? above the horizontal . Its weight is a force on the air
conditioner that is directed vertically downward. In order that the
unit not crush the roof tiles, the component of the unit?s weight perpendicular to the roof cannot exceed 425 N. (One newton, or 1 N, is
the SI unit of force. It is equal to 0.2248 lb.) (a) What is the maximum allowed weight of the unit? (b) If the fasteners fail, the unit
slides 1.50 m along the roof before it comes to a halt against a ledge.
How much work does the weight force do on the unit during its slide
if the unit has the weight calculated in part (a)? As we described in
Section 1.10, the work done by a force on an object that undergoes
a displacement s is W=F.s
large, flat field. Each is given a meter stick, a compass, a calculator, a shovel, and (in a different order for each contestant) the following three displacements:
72.4 m, 32.0? east of north
57.3 m, 36.0? south of west
17.8 m due south
The three displacements lead to the point in the field where the
keys to a new Porsche are buried. Two players start measuring
immediately, but the winner first calculates where to go. What
does she calculate?
is it from the takeoff point?
certain units in which the unit of length is 25 cm and
the unit of mass is 50 g, the numerical value of density
of the material is:
(1) 40 (2) 16 = (3) 640?s (4): 410
the figure. The spring balance, pulley and strings are mass less. Now, a force mg is
applied on block C in downward direction. Find the new reading of spring balance.
Assume all pulleys to the frictionles.( I am not able to send the diagram )
applied on block C in downward direction. Find the new reading of spring balance.
Assume all pulleys to the frictionless.
the answer.